Your json is array of 6864 jsonobjects, that is deserialised to list of dicts, like this (one elment):
Output:
{
"COD": "PC97987",
"Nombre": "Todas las edades. Total. Total. Málaga. Dato base. ",
"T3_Unidad": "Personas",
"T3_Escala": " ",
"MetaData": [{
"Id": 15668,
"Variable": {
"Id": 356,
"Nombre": "Totales de edad",
"Codigo": ""
},
"Nombre": "Todas las edades",
"Codigo": ""
}, {
"Id": 16420,
"Variable": {
"Id": 141,
"Nombre": "Nacionalidad",
"Codigo": ""
},
"Nombre": "Total",
"Codigo": ""
}, {
"Id": 451,
"Variable": {
"Id": 18,
"Nombre": "Sexo",
"Codigo": ""
},
"Nombre": "Total",
"Codigo": ""
}, {
"Id": 30,
"Variable": {
"Id": 115,
"Nombre": "Provincias",
"Codigo": "PROV"
},
"Nombre": "Málaga",
"Codigo": "29"
}, {
"Id": 72,
"Variable": {
"Id": 3,
"Nombre": "Tipo de dato",
"Codigo": ""
},
"Nombre": "Dato base",
"Codigo": ""
}],
"Data": [{
"Fecha": "2022-01-01T00:00:00.000+01:00",
"T3_TipoDato": "Definitivo",
"T3_Periodo": "1 de enero de",
"Anyo": 2022,
"Valor": 1717504.0
}, {
"Fecha": "2021-01-01T00:00:00.000+01:00",
"T3_TipoDato": "Definitivo",
"T3_Periodo": "1 de enero de",
"Anyo": 2021,
"Valor": 1695651.0
}, {
"Fecha": "2020-01-01T00:00:00.000+01:00",
"T3_TipoDato": "Definitivo",
"T3_Periodo": "1 de enero de",
"Anyo": 2020,
"Valor": 1685920.0
}, {
"Fecha": "2019-01-01T00:00:00.000+01:00",
"T3_TipoDato": "Definitivo",
"T3_Periodo": "1 de enero de",
"Anyo": 2019,
"Valor": 1661785.0
}, {
"Fecha": "2018-01-01T00:00:00.000+01:00",
"T3_TipoDato": "Definitivo",
"T3_Periodo": "1 de enero de",
"Anyo": 2018,
"Valor": 1641121.0
}, {
"Fecha": "2017-01-01T00:00:00.000+01:00",
"T3_TipoDato": "Definitivo",
"T3_Periodo": "1 de enero de",
"Anyo": 2017,
"Valor": 1630615.0
}, {
"Fecha": "2016-01-01T00:00:00.000+01:00",
"T3_TipoDato": "Definitivo",
"T3_Periodo": "1 de enero de",
"Anyo": 2016,
"Valor": 1629298.0
}, {
"Fecha": "2015-01-01T00:00:00.000+01:00",
"T3_TipoDato": "Definitivo",
"T3_Periodo": "1 de enero de",
"Anyo": 2015,
"Valor": 1628973.0
}, {
"Fecha": "2014-01-01T00:00:00.000+01:00",
"T3_TipoDato": "Definitivo",
"T3_Periodo": "1 de enero de",
"Anyo": 2014,
"Valor": 1621968.0
}, {
"Fecha": "2013-01-01T00:00:00.000+01:00",
"T3_TipoDato": "Definitivo",
"T3_Periodo": "1 de enero de",
"Anyo": 2013,
"Valor": 1652999.0
}, {
"Fecha": "2012-01-01T00:00:00.000+01:00",
"T3_TipoDato": "Definitivo",
"T3_Periodo": "1 de enero de",
"Anyo": 2012,
"Valor": 1641098.0
}, {
"Fecha": "2011-01-01T00:00:00.000+01:00",
"T3_TipoDato": "Definitivo",
"T3_Periodo": "1 de enero de",
"Anyo": 2011,
"Valor": 1625827.0
}, {
"Fecha": "2010-01-01T00:00:00.000+01:00",
"T3_TipoDato": "Definitivo",
"T3_Periodo": "1 de enero de",
"Anyo": 2010,
"Valor": 1609557.0
}, {
"Fecha": "2009-01-01T00:00:00.000+01:00",
"T3_TipoDato": "Definitivo",
"T3_Periodo": "1 de enero de",
"Anyo": 2009,
"Valor": 1593068.0
}, {
"Fecha": "2008-01-01T00:00:00.000+01:00",
"T3_TipoDato": "Definitivo",
"T3_Periodo": "1 de enero de",
"Anyo": 2008,
"Valor": 1563261.0
}, {
"Fecha": "2007-01-01T00:00:00.000+01:00",
"T3_TipoDato": "Definitivo",
"T3_Periodo": "1 de enero de",
"Anyo": 2007,
"Valor": 1517523.0
}, {
"Fecha": "2006-01-01T00:00:00.000+01:00",
"T3_TipoDato": "Definitivo",
"T3_Periodo": "1 de enero de",
"Anyo": 2006,
"Valor": 1491287.0
}, {
"Fecha": "2005-01-01T00:00:00.000+01:00",
"T3_TipoDato": "Definitivo",
"T3_Periodo": "1 de enero de",
"Anyo": 2005,
"Valor": 1453409.0
}, {
"Fecha": "2004-01-01T00:00:00.000+01:00",
"T3_TipoDato": "Definitivo",
"T3_Periodo": "1 de enero de",
"Anyo": 2004,
"Valor": 1397925.0
}, {
"Fecha": "2003-01-01T00:00:00.000+01:00",
"T3_TipoDato": "Definitivo",
"T3_Periodo": "1 de enero de",
"Anyo": 2003,
"Valor": 1374890.0
}]
}
I don't see which part of this goes into which column