{
  "fields": [{"id":"_id","type":"int"},{"id":"年度別（年度末現在）","type":"numeric"},{"id":"加入世帯数(世帯）","type":"numeric"},{"id":"全世帯に対する割合（％）","type":"numeric"},{"id":"被保険者数（人）","type":"numeric"},{"id":"全人口に対する割合（％）","type":"numeric"}],
  "records": [
    [1,2019,59278,35.5,89843,23],
    [2,2020,58666,35,88069,22.8],
    [3,2021,57349,34.7,84865,22.3],
    [4,2022,54667,32.9,79634,21.2],
    [5,2023,52494,31.6,75507,20.3]
]}