Teresa Lloyd-braga Católica Lisbon School of Business and Economics   Católica Lisbon School of Business and Economics Universidade Católica Portuguesa Palma de cima Lisbon, l 1649-023 Portugal   tlb@clsbe.lisboa.ucp.pt             JEL Areas: E3 : Prices, Business Fluctuations, and Cycles: General (includes Measurement and Data) E6 : Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General