{
  "fields": [{"id":"_id","type":"int"},{"id":"年度","type":"text"},{"id":"実施回数","type":"numeric"},{"id":"参加者数","type":"numeric"}],
  "records": [
    [1,"28年",28,431],
    [2,"29年",39,483],
    [3,"30年",42,482],
    [4,"令和元年",41,498],
    [5,"2年",13,214]
]}