{
  "fields": [{"id":"_id","type":"int"},{"id":"0年以上20年以下","type":"text"},{"id":"20年超40年以下","type":"text"},{"id":"40年超60年以下","type":"text"},{"id":"60年超80年以下","type":"text"},{"id":"80年超","type":"text"},{"id":"総合計","type":"text"}],
  "records": [
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]}