Eurilton Araújo Central Bank of Brazil and FUCAPE Business School   SBS, Quadra 3, Bloco B Edificio Sede do Banco Central Brasilia, DF 70074-900 Brazil   eurilton@gmail.com             JEL Areas: E5 : Monetary Policy, Central Banking, and the Supply of Money and Credit: General E6 : Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General