Teresa Lloyd-braga Catolica Lisbon School of Business and Economics   Universidade Catolica Portuguesa Palma de Cima 1649-023, Lisboa Lisbon, 1649-023 Lisboa Portugal   tlb@ucp.pt             JEL Areas: E3 : Prices, Business Fluctuations, and Cycles: General (includes Measurement and Data) H2 : Taxation, Subsidies, and Revenue: General