{
  "fields": [{"id":"_id","type":"int"},{"id":"年度別","type":"text"},{"id":"加入者総数（人）","type":"numeric"},{"id":"第１号被保険者強制加入者（人）","type":"numeric"},{"id":"第１号被保険者任意加入者（人）","type":"numeric"}],
  "records": [
    [1,"2019",46319,45670,649],
    [2,"2020",46216,45594,622],
    [3,"2021",45730,45099,631],
    [4,"2022",44476,43814,662],
    [5,"2023",43670,42980,690],
    [6," ",null,null,null]
]}