{
  "fields": [{"id":"_id","type":"int"},{"id":"年度","type":"numeric"},{"id":"区分","type":"text"},{"id":"被保険者数[人]","type":"numeric"}],
  "records": [
    [1,2017,"一般",114979],
    [2,2017,"退職",1074],
    [3,2018,"一般",110295],
    [4,2018,"退職",241],
    [5,2019,"一般",105804],
    [6,2019,"退職",9],
    [7,2020,"一般",104241],
    [8,2020,"退職",0],
    [9,2021,"一般",100708],
    [10,2021,"退職",0]
]}