{
  "fields": [{"id":"_id","type":"int"},{"id":"año","type":"numeric"},{"id":"valor","type":"numeric"}],
  "records": [
    [1,2012,27.1],
    [2,2013,26.4],
    [3,2014,28.6],
    [4,2015,30.2],
    [5,2016,33.2],
    [6,2017,32.5]
]}