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  "$schema": "https://vega.github.io/schema/vega-lite/v5.json",
  "description": "Candidates per vacancy (weekly ratio line) over dimmed monthly magnitude bars. Bars use a hidden 0-265k count scale (two-width overlap, bullet style); the ratio axis is the only visible axis. Data comes from the named source 'labor_market_weekly' (fields: week, candidates, vacancies) - rebind it at runtime or serve labor-market-weekly.json next to this file.",
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  "height": 430,
  "background": "#fcfcfb",
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    "bottom": 5
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    "font": "system-ui, -apple-system, 'Segoe UI', sans-serif",
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  "data": {
    "name": "labor_market_weekly",
    "values": [
      {
        "week": "2020-03-23",
        "candidates": 18321,
        "vacancies": 4927
      },
      {
        "week": "2020-03-30",
        "candidates": 18936,
        "vacancies": 4216
      },
      {
        "week": "2020-04-06",
        "candidates": 18705,
        "vacancies": 4570
      },
      {
        "week": "2020-04-13",
        "candidates": 19150,
        "vacancies": 4920
      },
      {
        "week": "2020-04-20",
        "candidates": 19574,
        "vacancies": 5125
      },
      {
        "week": "2020-04-27",
        "candidates": 19880,
        "vacancies": 5183
      },
      {
        "week": "2020-05-04",
        "candidates": 20230,
        "vacancies": 5286
      },
      {
        "week": "2020-05-11",
        "candidates": 20462,
        "vacancies": 5115
      },
      {
        "week": "2020-05-18",
        "candidates": 20822,
        "vacancies": 5432
      },
      {
        "week": "2020-05-25",
        "candidates": 21131,
        "vacancies": 5615
      },
      {
        "week": "2020-06-01",
        "candidates": 21269,
        "vacancies": 5823
      },
      {
        "week": "2020-06-08",
        "candidates": 21384,
        "vacancies": 6084
      },
      {
        "week": "2020-06-15",
        "candidates": 20960,
        "vacancies": 6318
      },
      {
        "week": "2020-06-22",
        "candidates": 21284,
        "vacancies": 6454
      },
      {
        "week": "2020-06-29",
        "candidates": 21442,
        "vacancies": 6540
      },
      {
        "week": "2020-07-06",
        "candidates": 21745,
        "vacancies": 7019
      },
      {
        "week": "2020-07-13",
        "candidates": 21591,
        "vacancies": 7046
      },
      {
        "week": "2020-07-20",
        "candidates": 21547,
        "vacancies": 7284
      },
      {
        "week": "2020-07-27",
        "candidates": 21411,
        "vacancies": 7514
      },
      {
        "week": "2020-08-03",
        "candidates": 21334,
        "vacancies": 7458
      },
      {
        "week": "2020-08-10",
        "candidates": 21163,
        "vacancies": 7676
      },
      {
        "week": "2020-08-17",
        "candidates": 20927,
        "vacancies": 7879
      },
      {
        "week": "2020-08-24",
        "candidates": 20969,
        "vacancies": 8012
      },
      {
        "week": "2020-08-31",
        "candidates": 20287,
        "vacancies": 8569
      },
      {
        "week": "2020-09-07",
        "candidates": 20154,
        "vacancies": 9989
      },
      {
        "week": "2020-09-14",
        "candidates": 20204,
        "vacancies": 9543
      },
      {
        "week": "2020-09-21",
        "candidates": 20075,
        "vacancies": 10058
      },
      {
        "week": "2020-09-28",
        "candidates": 20124,
        "vacancies": 10135
      },
      {
        "week": "2020-10-05",
        "candidates": 19927,
        "vacancies": 10778
      },
      {
        "week": "2020-10-12",
        "candidates": 19549,
        "vacancies": 10726
      },
      {
        "week": "2020-10-19",
        "candidates": 19296,
        "vacancies": 11426
      },
      {
        "week": "2020-10-26",
        "candidates": 19142,
        "vacancies": 12008
      },
      {
        "week": "2020-11-02",
        "candidates": 18905,
        "vacancies": 12300
      },
      {
        "week": "2020-11-09",
        "candidates": 18518,
        "vacancies": 13124
      },
      {
        "week": "2020-11-16",
        "candidates": 18248,
        "vacancies": 13225
      },
      {
        "week": "2020-11-23",
        "candidates": 18170,
        "vacancies": 13413
      },
      {
        "week": "2020-11-30",
        "candidates": 17800,
        "vacancies": 14061
      },
      {
        "week": "2020-12-07",
        "candidates": 17393,
        "vacancies": 13939
      },
      {
        "week": "2020-12-14",
        "candidates": 16901,
        "vacancies": 14221
      },
      {
        "week": "2020-12-21",
        "candidates": 16375,
        "vacancies": 13573
      },
      {
        "week": "2020-12-28",
        "candidates": 15702,
        "vacancies": 12037
      },
      {
        "week": "2021-01-04",
        "candidates": 16357,
        "vacancies": 11888
      },
      {
        "week": "2021-01-11",
        "candidates": 16971,
        "vacancies": 14127
      },
      {
        "week": "2021-01-18",
        "candidates": 16944,
        "vacancies": 15651
      },
      {
        "week": "2021-01-25",
        "candidates": 16905,
        "vacancies": 17219
      },
      {
        "week": "2021-02-01",
        "candidates": 17022,
        "vacancies": 18082
      },
      {
        "week": "2021-02-08",
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        "vacancies": 17414
      },
      {
        "week": "2021-02-15",
        "candidates": 16699,
        "vacancies": 17930
      },
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        "week": "2021-02-22",
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        "vacancies": 18450
      },
      {
        "week": "2021-03-01",
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        "vacancies": 18923
      },
      {
        "week": "2021-03-08",
        "candidates": 16825,
        "vacancies": 18875
      },
      {
        "week": "2021-03-15",
        "candidates": 16885,
        "vacancies": 19080
      },
      {
        "week": "2021-03-22",
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        "vacancies": 19506
      },
      {
        "week": "2021-03-29",
        "candidates": 16223,
        "vacancies": 19997
      },
      {
        "week": "2021-04-05",
        "candidates": 16246,
        "vacancies": 20362
      },
      {
        "week": "2021-04-12",
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      },
      {
        "week": "2021-04-19",
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      },
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        "week": "2021-04-26",
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        "vacancies": 20627
      },
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        "week": "2021-05-03",
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        "vacancies": 19656
      },
      {
        "week": "2021-05-10",
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        "vacancies": 20128
      },
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        "week": "2021-05-17",
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      },
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        "week": "2021-05-24",
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        "vacancies": 21607
      },
      {
        "week": "2021-05-31",
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      },
      {
        "week": "2021-06-07",
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        "vacancies": 22309
      },
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        "week": "2021-06-14",
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        "vacancies": 22282
      },
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        "week": "2021-06-21",
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        "week": "2021-06-28",
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        "week": "2021-09-27",
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        "week": "2021-12-27",
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      {
        "week": "2023-10-30",
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      {
        "week": "2023-11-06",
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      {
        "week": "2023-11-13",
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      },
      {
        "week": "2023-11-20",
        "candidates": 92696,
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      {
        "week": "2023-11-27",
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        "vacancies": 6915
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      {
        "week": "2023-12-04",
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      {
        "week": "2023-12-11",
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      {
        "week": "2023-12-18",
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      {
        "week": "2023-12-25",
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      {
        "week": "2024-01-01",
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      {
        "week": "2024-01-08",
        "candidates": 90414,
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      {
        "week": "2024-01-15",
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        "vacancies": 6577
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      {
        "week": "2024-01-22",
        "candidates": 90327,
        "vacancies": 6939
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      {
        "week": "2024-01-29",
        "candidates": 90200,
        "vacancies": 6983
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      {
        "week": "2024-02-05",
        "candidates": 90189,
        "vacancies": 6852
      },
      {
        "week": "2024-02-12",
        "candidates": 89834,
        "vacancies": 6900
      },
      {
        "week": "2024-02-19",
        "candidates": 89650,
        "vacancies": 7200
      },
      {
        "week": "2024-02-26",
        "candidates": 89809,
        "vacancies": 7512
      },
      {
        "week": "2024-03-04",
        "candidates": 89681,
        "vacancies": 7523
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      {
        "week": "2024-03-11",
        "candidates": 90170,
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      {
        "week": "2024-03-18",
        "candidates": 90291,
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      {
        "week": "2024-03-25",
        "candidates": 90293,
        "vacancies": 7305
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      {
        "week": "2024-04-01",
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      {
        "week": "2024-04-08",
        "candidates": 90017,
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      {
        "week": "2024-04-15",
        "candidates": 89761,
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      {
        "week": "2024-04-22",
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        "vacancies": 7214
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      {
        "week": "2024-04-29",
        "candidates": 88531,
        "vacancies": 7288
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      {
        "week": "2024-05-06",
        "candidates": 88303,
        "vacancies": 7187
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      {
        "week": "2024-05-13",
        "candidates": 87963,
        "vacancies": 7054
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      {
        "week": "2024-05-20",
        "candidates": 87541,
        "vacancies": 7189
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      {
        "week": "2024-05-27",
        "candidates": 87180,
        "vacancies": 7211
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      {
        "week": "2024-06-03",
        "candidates": 86782,
        "vacancies": 7277
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      {
        "week": "2024-06-10",
        "candidates": 86785,
        "vacancies": 7232
      },
      {
        "week": "2024-06-17",
        "candidates": 86265,
        "vacancies": 7159
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      {
        "week": "2024-06-24",
        "candidates": 86183,
        "vacancies": 6958
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      {
        "week": "2024-07-01",
        "candidates": 86120,
        "vacancies": 7280
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      {
        "week": "2024-07-08",
        "candidates": 86067,
        "vacancies": 7269
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      {
        "week": "2024-07-15",
        "candidates": 85534,
        "vacancies": 7279
      },
      {
        "week": "2024-07-22",
        "candidates": 85656,
        "vacancies": 7352
      },
      {
        "week": "2024-07-29",
        "candidates": 85788,
        "vacancies": 7396
      },
      {
        "week": "2024-08-05",
        "candidates": 85888,
        "vacancies": 7507
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      {
        "week": "2024-08-12",
        "candidates": 85544,
        "vacancies": 7549
      },
      {
        "week": "2024-08-19",
        "candidates": 85074,
        "vacancies": 7357
      },
      {
        "week": "2024-08-26",
        "candidates": 84826,
        "vacancies": 7030
      },
      {
        "week": "2024-09-02",
        "candidates": 85171,
        "vacancies": 7208
      },
      {
        "week": "2024-09-09",
        "candidates": 85444,
        "vacancies": 7447
      },
      {
        "week": "2024-09-16",
        "candidates": 85150,
        "vacancies": 7401
      },
      {
        "week": "2024-09-23",
        "candidates": 85166,
        "vacancies": 7427
      },
      {
        "week": "2024-09-30",
        "candidates": 84683,
        "vacancies": 7226
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      {
        "week": "2024-10-07",
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        "vacancies": 7348
      },
      {
        "week": "2024-10-14",
        "candidates": 84640,
        "vacancies": 7494
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      {
        "week": "2024-10-21",
        "candidates": 83925,
        "vacancies": 7406
      },
      {
        "week": "2024-10-28",
        "candidates": 83615,
        "vacancies": 7367
      },
      {
        "week": "2024-11-04",
        "candidates": 83532,
        "vacancies": 7365
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      {
        "week": "2024-11-11",
        "candidates": 83010,
        "vacancies": 7425
      },
      {
        "week": "2024-11-18",
        "candidates": 82605,
        "vacancies": 7574
      },
      {
        "week": "2024-11-25",
        "candidates": 82003,
        "vacancies": 7586
      },
      {
        "week": "2024-12-02",
        "candidates": 81870,
        "vacancies": 7382
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      {
        "week": "2024-12-09",
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        "vacancies": 7426
      },
      {
        "week": "2024-12-16",
        "candidates": 80443,
        "vacancies": 7142
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      {
        "week": "2024-12-23",
        "candidates": 78891,
        "vacancies": 6456
      },
      {
        "week": "2024-12-30",
        "candidates": 78567,
        "vacancies": 5942
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      {
        "week": "2025-01-06",
        "candidates": 80219,
        "vacancies": 6350
      },
      {
        "week": "2025-01-13",
        "candidates": 80558,
        "vacancies": 6794
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      {
        "week": "2025-01-20",
        "candidates": 80995,
        "vacancies": 7339
      },
      {
        "week": "2025-01-27",
        "candidates": 81569,
        "vacancies": 7983
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      {
        "week": "2025-02-03",
        "candidates": 82141,
        "vacancies": 7676
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      {
        "week": "2025-02-10",
        "candidates": 82541,
        "vacancies": 7917
      },
      {
        "week": "2025-02-17",
        "candidates": 82792,
        "vacancies": 7964
      },
      {
        "week": "2025-02-24",
        "candidates": 82603,
        "vacancies": 8232
      },
      {
        "week": "2025-03-03",
        "candidates": 82417,
        "vacancies": 8008
      },
      {
        "week": "2025-03-10",
        "candidates": 82824,
        "vacancies": 7959
      },
      {
        "week": "2025-03-17",
        "candidates": 82681,
        "vacancies": 7957
      },
      {
        "week": "2025-03-24",
        "candidates": 83243,
        "vacancies": 8007
      },
      {
        "week": "2025-03-31",
        "candidates": 83774,
        "vacancies": 8065
      },
      {
        "week": "2025-04-07",
        "candidates": 84178,
        "vacancies": 8059
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      {
        "week": "2025-04-14",
        "candidates": 83783,
        "vacancies": 7970
      },
      {
        "week": "2025-04-21",
        "candidates": 83588,
        "vacancies": 7984
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      {
        "week": "2025-04-28",
        "candidates": 83286,
        "vacancies": 7926
      },
      {
        "week": "2025-05-05",
        "candidates": 83755,
        "vacancies": 7978
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      {
        "week": "2025-05-12",
        "candidates": 83849,
        "vacancies": 8028
      },
      {
        "week": "2025-05-19",
        "candidates": 83707,
        "vacancies": 8265
      },
      {
        "week": "2025-05-26",
        "candidates": 83643,
        "vacancies": 8389
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      {
        "week": "2025-06-02",
        "candidates": 83385,
        "vacancies": 8387
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      {
        "week": "2025-06-09",
        "candidates": 83215,
        "vacancies": 8357
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      {
        "week": "2025-06-16",
        "candidates": 83214,
        "vacancies": 8319
      },
      {
        "week": "2025-06-23",
        "candidates": 83042,
        "vacancies": 8135
      },
      {
        "week": "2025-06-30",
        "candidates": 83784,
        "vacancies": 8211
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      {
        "week": "2025-07-07",
        "candidates": 83907,
        "vacancies": 8471
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      {
        "week": "2025-07-14",
        "candidates": 83825,
        "vacancies": 8653
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      {
        "week": "2025-07-21",
        "candidates": 83530,
        "vacancies": 8826
      },
      {
        "week": "2025-07-28",
        "candidates": 83797,
        "vacancies": 8773
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      {
        "week": "2025-08-04",
        "candidates": 83770,
        "vacancies": 8816
      },
      {
        "week": "2025-08-11",
        "candidates": 83567,
        "vacancies": 8877
      },
      {
        "week": "2025-08-18",
        "candidates": 83423,
        "vacancies": 9092
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      {
        "week": "2025-08-25",
        "candidates": 83605,
        "vacancies": 8978
      },
      {
        "week": "2025-09-01",
        "candidates": 84643,
        "vacancies": 9020
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      {
        "week": "2025-09-08",
        "candidates": 84728,
        "vacancies": 9021
      },
      {
        "week": "2025-09-15",
        "candidates": 84619,
        "vacancies": 9193
      },
      {
        "week": "2025-09-22",
        "candidates": 84709,
        "vacancies": 9362
      },
      {
        "week": "2025-09-29",
        "candidates": 84630,
        "vacancies": 9312
      },
      {
        "week": "2025-10-06",
        "candidates": 84628,
        "vacancies": 9444
      },
      {
        "week": "2025-10-13",
        "candidates": 84270,
        "vacancies": 9508
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      {
        "week": "2025-10-20",
        "candidates": 84020,
        "vacancies": 9462
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      {
        "week": "2025-10-27",
        "candidates": 83650,
        "vacancies": 9505
      },
      {
        "week": "2025-11-03",
        "candidates": 83579,
        "vacancies": 9602
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      {
        "week": "2025-11-10",
        "candidates": 83087,
        "vacancies": 9648
      },
      {
        "week": "2025-11-17",
        "candidates": 82749,
        "vacancies": 9624
      },
      {
        "week": "2025-11-24",
        "candidates": 82221,
        "vacancies": 9636
      },
      {
        "week": "2025-12-01",
        "candidates": 82066,
        "vacancies": 9421
      },
      {
        "week": "2025-12-08",
        "candidates": 81693,
        "vacancies": 9420
      },
      {
        "week": "2025-12-15",
        "candidates": 81040,
        "vacancies": 9106
      },
      {
        "week": "2025-12-22",
        "candidates": 79990,
        "vacancies": 8285
      },
      {
        "week": "2025-12-29",
        "candidates": 79528,
        "vacancies": 7440
      },
      {
        "week": "2026-01-05",
        "candidates": 81278,
        "vacancies": 8218
      },
      {
        "week": "2026-01-12",
        "candidates": 81498,
        "vacancies": 8557
      },
      {
        "week": "2026-01-19",
        "candidates": 82168,
        "vacancies": 9304
      },
      {
        "week": "2026-01-26",
        "candidates": 82439,
        "vacancies": 10010
      },
      {
        "week": "2026-02-02",
        "candidates": 83010,
        "vacancies": 9587
      },
      {
        "week": "2026-02-09",
        "candidates": 83210,
        "vacancies": 9604
      },
      {
        "week": "2026-02-16",
        "candidates": 83714,
        "vacancies": 9601
      },
      {
        "week": "2026-02-23",
        "candidates": 83700,
        "vacancies": 9548
      },
      {
        "week": "2026-03-02",
        "candidates": 83984,
        "vacancies": 9474
      },
      {
        "week": "2026-03-09",
        "candidates": 84308,
        "vacancies": 9355
      },
      {
        "week": "2026-03-16",
        "candidates": 84621,
        "vacancies": 9260
      },
      {
        "week": "2026-03-23",
        "candidates": 85119,
        "vacancies": 9127
      },
      {
        "week": "2026-03-30",
        "candidates": 86013,
        "vacancies": 8762
      },
      {
        "week": "2026-04-06",
        "candidates": 86339,
        "vacancies": 8610
      },
      {
        "week": "2026-04-13",
        "candidates": 86366,
        "vacancies": 8221
      },
      {
        "week": "2026-04-20",
        "candidates": 86790,
        "vacancies": 7825
      },
      {
        "week": "2026-04-27",
        "candidates": 86898,
        "vacancies": 7785
      },
      {
        "week": "2026-05-04",
        "candidates": 87141,
        "vacancies": 7834
      },
      {
        "week": "2026-05-11",
        "candidates": 87614,
        "vacancies": 8118
      },
      {
        "week": "2026-05-18",
        "candidates": 87658,
        "vacancies": 8149
      },
      {
        "week": "2026-05-25",
        "candidates": 88061,
        "vacancies": 8173
      },
      {
        "week": "2026-06-01",
        "candidates": 88405,
        "vacancies": 7946
      },
      {
        "week": "2026-06-08",
        "candidates": 88971,
        "vacancies": 7901
      },
      {
        "week": "2026-06-15",
        "candidates": 88786,
        "vacancies": 7755
      },
      {
        "week": "2026-06-22",
        "candidates": 89092,
        "vacancies": 7572
      },
      {
        "week": "2026-06-29",
        "candidates": 89343,
        "vacancies": 7248
      },
      {
        "week": "2026-07-06",
        "candidates": 89844,
        "vacancies": 7155
      },
      {
        "week": "2026-07-13",
        "candidates": 89944,
        "vacancies": 7093
      },
      {
        "week": "2026-07-20",
        "candidates": 90361,
        "vacancies": 6980
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      {
        "week": "2026-07-27",
        "candidates": 90448,
        "vacancies": 7249
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    ]
  },
  "transform": [
    {
      "calculate": "datum.candidates / datum.vacancies",
      "as": "ratio"
    }
  ],
  "resolve": {
    "scale": {
      "y": "independent"
    }
  },
  "layer": [
    {
      "description": "Wide pale bars: monthly mean candidates (hidden count scale)",
      "mark": {
        "type": "bar",
        "width": {
          "band": 0.72
        },
        "opacity": 0.15
      },
      "encoding": {
        "x": {
          "field": "week",
          "timeUnit": "yearmonth",
          "type": "temporal",
          "bandPosition": 0.5,
          "title": null,
          "axis": {
            "grid": false,
            "format": "%Y",
            "tickCount": "year",
            "labelFontSize": 11
          }
        },
        "y": {
          "aggregate": "mean",
          "field": "candidates",
          "type": "quantitative",
          "scale": {
            "domain": [
              0,
              265000
            ]
          },
          "axis": null
        },
        "color": {
          "datum": "Candidates",
          "scale": {
            "domain": [
              "Candidates",
              "Vacancies"
            ],
            "range": [
              "#2a78d6",
              "#eb6834"
            ]
          },
          "legend": {
            "orient": "top",
            "title": null,
            "symbolType": "square",
            "symbolSize": 140,
            "symbolOpacity": 0.35,
            "labelExpr": "datum.label + ' (count)'"
          }
        }
      }
    },
    {
      "description": "Narrow bars in front: monthly mean vacancies (same hidden count scale)",
      "mark": {
        "type": "bar",
        "width": {
          "band": 0.32
        },
        "opacity": 0.32
      },
      "encoding": {
        "x": {
          "field": "week",
          "timeUnit": "yearmonth",
          "type": "temporal",
          "bandPosition": 0.5,
          "title": null,
          "axis": {
            "grid": false,
            "format": "%Y",
            "tickCount": "year",
            "labelFontSize": 11
          }
        },
        "y": {
          "aggregate": "mean",
          "field": "vacancies",
          "type": "quantitative",
          "scale": {
            "domain": [
              0,
              265000
            ]
          },
          "axis": null
        },
        "color": {
          "datum": "Vacancies",
          "scale": {
            "domain": [
              "Candidates",
              "Vacancies"
            ],
            "range": [
              "#2a78d6",
              "#eb6834"
            ]
          },
          "legend": {
            "orient": "top",
            "title": null,
            "symbolType": "square",
            "symbolSize": 140,
            "symbolOpacity": 0.35,
            "labelExpr": "datum.label + ' (count)'"
          }
        }
      }
    },
    {
      "description": "Count end label: last weekly candidates",
      "transform": [
        {
          "window": [
            {
              "op": "row_number",
              "as": "rn"
            }
          ],
          "sort": [
            {
              "field": "week",
              "order": "descending"
            }
          ]
        },
        {
          "filter": "datum.rn == 1"
        },
        {
          "calculate": "format(datum.candidates / 1000, '.0f') + 'k'",
          "as": "lbl"
        }
      ],
      "mark": {
        "type": "text",
        "align": "left",
        "dx": 7,
        "fontSize": 10.5,
        "fill": "#898781"
      },
      "encoding": {
        "x": {
          "field": "week",
          "type": "temporal"
        },
        "y": {
          "field": "candidates",
          "type": "quantitative",
          "scale": {
            "domain": [
              0,
              265000
            ]
          },
          "axis": null
        },
        "text": {
          "field": "lbl"
        }
      }
    },
    {
      "description": "Count end label: last weekly vacancies",
      "transform": [
        {
          "window": [
            {
              "op": "row_number",
              "as": "rn"
            }
          ],
          "sort": [
            {
              "field": "week",
              "order": "descending"
            }
          ]
        },
        {
          "filter": "datum.rn == 1"
        },
        {
          "calculate": "format(datum.vacancies / 1000, '.1f') + 'k'",
          "as": "lbl"
        }
      ],
      "mark": {
        "type": "text",
        "align": "left",
        "dx": 7,
        "fontSize": 10.5,
        "fill": "#898781"
      },
      "encoding": {
        "x": {
          "field": "week",
          "type": "temporal"
        },
        "y": {
          "field": "vacancies",
          "type": "quantitative",
          "scale": {
            "domain": [
              0,
              265000
            ]
          },
          "axis": null
        },
        "text": {
          "field": "lbl"
        }
      }
    },
    {
      "description": "Parity line: 1 candidate per vacancy",
      "data": {
        "values": [
          {
            "y": 1
          }
        ]
      },
      "mark": {
        "type": "rule",
        "stroke": "#c3c2b7",
        "strokeWidth": 1
      },
      "encoding": {
        "y": {
          "field": "y",
          "type": "quantitative",
          "scale": {
            "domain": [
              0,
              16
            ]
          },
          "axis": null
        }
      }
    },
    {
      "description": "Parity label (halo)",
      "data": {
        "values": [
          {
            "week": "2020-04-06",
            "y": 0.55,
            "t": "1:1 parity"
          }
        ]
      },
      "mark": {
        "type": "text",
        "align": "left",
        "fontSize": 10.5,
        "fill": "#fcfcfb",
        "stroke": "#fcfcfb",
        "strokeWidth": 3.5
      },
      "encoding": {
        "x": {
          "field": "week",
          "type": "temporal"
        },
        "y": {
          "field": "y",
          "type": "quantitative",
          "scale": {
            "domain": [
              0,
              16
            ]
          },
          "axis": null
        },
        "text": {
          "field": "t"
        }
      }
    },
    {
      "description": "Parity label",
      "data": {
        "values": [
          {
            "week": "2020-04-06",
            "y": 0.55,
            "t": "1:1 parity"
          }
        ]
      },
      "mark": {
        "type": "text",
        "align": "left",
        "fontSize": 10.5,
        "fill": "#898781"
      },
      "encoding": {
        "x": {
          "field": "week",
          "type": "temporal"
        },
        "y": {
          "field": "y",
          "type": "quantitative",
          "scale": {
            "domain": [
              0,
              16
            ]
          },
          "axis": null
        },
        "text": {
          "field": "t"
        }
      }
    },
    {
      "description": "Full-scale invasion rule",
      "data": {
        "values": [
          {
            "week": "2022-02-24"
          }
        ]
      },
      "mark": {
        "type": "rule",
        "stroke": "#c3c2b7",
        "strokeWidth": 1
      },
      "encoding": {
        "x": {
          "field": "week",
          "type": "temporal"
        }
      }
    },
    {
      "description": "Full-scale invasion label",
      "data": {
        "values": [
          {
            "week": "2022-02-24",
            "t": "Full-scale invasion"
          }
        ]
      },
      "mark": {
        "type": "text",
        "align": "left",
        "dx": 6,
        "y": 14,
        "fontSize": 11,
        "fill": "#52514e"
      },
      "encoding": {
        "x": {
          "field": "week",
          "type": "temporal"
        },
        "text": {
          "field": "t"
        }
      }
    },
    {
      "description": "2021 inversion annotation (halo)",
      "data": {
        "values": [
          {
            "week": "2021-06-01",
            "y": 2.45,
            "t": "Jan–Sep 2021: vacancies > candidates"
          }
        ]
      },
      "mark": {
        "type": "text",
        "align": "center",
        "fontSize": 10.5,
        "fill": "#fcfcfb",
        "stroke": "#fcfcfb",
        "strokeWidth": 3.5
      },
      "encoding": {
        "x": {
          "field": "week",
          "type": "temporal"
        },
        "y": {
          "field": "y",
          "type": "quantitative",
          "scale": {
            "domain": [
              0,
              16
            ]
          },
          "axis": null
        },
        "text": {
          "field": "t"
        }
      }
    },
    {
      "description": "2021 inversion annotation",
      "data": {
        "values": [
          {
            "week": "2021-06-01",
            "y": 2.45,
            "t": "Jan–Sep 2021: vacancies > candidates"
          }
        ]
      },
      "mark": {
        "type": "text",
        "align": "center",
        "fontSize": 10.5,
        "fill": "#898781"
      },
      "encoding": {
        "x": {
          "field": "week",
          "type": "temporal"
        },
        "y": {
          "field": "y",
          "type": "quantitative",
          "scale": {
            "domain": [
              0,
              16
            ]
          },
          "axis": null
        },
        "text": {
          "field": "t"
        }
      }
    },
    {
      "description": "The hero: weekly candidates-per-vacancy ratio",
      "mark": {
        "type": "line",
        "stroke": "#0b0b0b"
      },
      "encoding": {
        "x": {
          "field": "week",
          "type": "temporal",
          "title": null,
          "axis": {
            "grid": false,
            "format": "%Y",
            "tickCount": "year",
            "labelFontSize": 11
          }
        },
        "y": {
          "field": "ratio",
          "type": "quantitative",
          "scale": {
            "domain": [
              0,
              16
            ]
          },
          "axis": {
            "tickCount": 5,
            "title": "Candidates per vacancy"
          }
        }
      }
    },
    {
      "description": "Ratio end label (derived from last row)",
      "transform": [
        {
          "window": [
            {
              "op": "row_number",
              "as": "rn"
            }
          ],
          "sort": [
            {
              "field": "week",
              "order": "descending"
            }
          ]
        },
        {
          "filter": "datum.rn == 1"
        },
        {
          "calculate": "format(datum.ratio, '.1f')",
          "as": "lbl"
        }
      ],
      "mark": {
        "type": "text",
        "align": "left",
        "dx": 7,
        "fontSize": 12,
        "fontWeight": 600,
        "fill": "#0b0b0b"
      },
      "encoding": {
        "x": {
          "field": "week",
          "type": "temporal"
        },
        "y": {
          "field": "ratio",
          "type": "quantitative",
          "scale": {
            "domain": [
              0,
              16
            ]
          },
          "axis": null
        },
        "text": {
          "field": "lbl"
        }
      }
    },
    {
      "description": "Crosshair + tooltip on nearest week",
      "mark": {
        "type": "rule",
        "stroke": "#c3c2b7",
        "strokeWidth": 1
      },
      "params": [
        {
          "name": "hover",
          "select": {
            "type": "point",
            "fields": [
              "week"
            ],
            "nearest": true,
            "on": "mouseover",
            "clear": "mouseout"
          }
        }
      ],
      "encoding": {
        "x": {
          "field": "week",
          "type": "temporal"
        },
        "opacity": {
          "condition": {
            "param": "hover",
            "empty": false,
            "value": 0.6
          },
          "value": 0
        },
        "tooltip": [
          {
            "field": "week",
            "type": "temporal",
            "title": "Week",
            "format": "%b %d, %Y"
          },
          {
            "field": "candidates",
            "type": "quantitative",
            "title": "Candidates",
            "format": ","
          },
          {
            "field": "vacancies",
            "type": "quantitative",
            "title": "Vacancies",
            "format": ","
          },
          {
            "field": "ratio",
            "type": "quantitative",
            "title": "Per vacancy",
            "format": ".2f"
          }
        ]
      }
    }
  ]
}