Fonte:
http://info.portaldasfinancas.gov.pt/NR/rdonlyres/5B436F6B-CA96-4B5A-A034-FDD710A71A3D/0/inf%202382.pdf
http://info.portaldasfinancas.gov.pt/NR/rdonlyres/ABC6AAC6-F0A1-4A4F-A2D4-E70358913EAE/0/inf%202332.pdf
http://info.portaldasfinancas.gov.pt/NR/rdonlyres/E7C8FD18-3D16-497D-ACAF-CDD7DF31FBAE/0/inf%201983.pdf
