Julian Moral carcedo Universidad Autonoma de Madrid   FAC. CC ECONOMICAS CAMPUS CANTOBLANCO Crtra Colmenar Km 15 MADRID, MADRID 28049 SPAIN   julian.moral@uam.es             JEL Areas: H6 : National Budget, Deficit, and Debt: General E6 : Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General