{
  "fields": [{"id":"_id","type":"int"},{"id":"Tramo de Edad","type":"text"},{"id":"año","type":"numeric"},{"id":"valor","type":"numeric"}],
  "records": [
    [1,"Menores de 14",2011,44.3],
    [2,"14 a 64",2011,32.8],
    [3,"65 a 79",2011,23.9],
    [4,"80 y más",2011,21.1]
]}