Deepen your analysis,
here
Sources/Entities: INE, INE (until 2005) | INAG/MA (until 2009) | INE | ERSAR | ERSARA | DREM (as from 2011), PORDATA
Sources/Entities: INE, INE (until 2005) | INAG/MA (until 2009) | INE | ERSAR | ERSARA | DREM (as from 2011), PORDATA