{
  "fields": [{"id":"_id","type":"int"},{"id":"Tramo de edad","type":"text"},{"id":"año","type":"numeric"},{"id":"valor","type":"numeric"}],
  "records": [
    [1,"15 a 19",2013,24.4],
    [2,"20 a 24",2013,57.3],
    [3,"25 a 29",2013,55.9]
]}