Diego Ferreira UFPR   Rua Armando Couto de Magalhaes Rodrigues 28 Apto 12 Vila Betania Sao Jose dos Campos, SP 12245483 Brazil   diegoferreira.eco@gmail.com             JEL Areas: E3 : Prices, Business Fluctuations, and Cycles: General (includes Measurement and Data) E5 : Monetary Policy, Central Banking, and the Supply of Money and Credit: General