{
  "fields": [{"id":"_id","type":"int"},{"id":"Tramo de Edad","type":"text"},{"id":"año","type":"numeric"},{"id":"valor","type":"numeric"}],
  "records": [
    [1,"Menores de 65",2015,5.6],
    [2,"De 65 a 84 ",2015,43.5],
    [3,"85 y más",2015,50.9]
]}