{
  "fields": [{"id":"_id","type":"int"},{"id":"Tramo de Edad","type":"text"},{"id":"año","type":"numeric"},{"id":"valor","type":"numeric"}],
  "records": [
    [1,"Menos de 50",2015,1.1],
    [2,"50 a 64 años",2015,4.9],
    [3,"65 a 79",2015,21.8],
    [4,"80  y más",2015,72.2]
]}