{
  "field": "collection_year",
  "partitions": [
    {
      "value": 2015,
      "rows": 8910,
      "json": "by/collection_year/2015.json"
    },
    {
      "value": 2016,
      "rows": 8910,
      "json": "by/collection_year/2016.json"
    },
    {
      "value": 2017,
      "rows": 8920,
      "json": "by/collection_year/2017.json"
    },
    {
      "value": 2018,
      "rows": 8932,
      "json": "by/collection_year/2018.json"
    },
    {
      "value": 2019,
      "rows": 8908,
      "json": "by/collection_year/2019.json"
    }
  ]
}