1. Institute of Economics, Federal University of Rio de Janeiro, Av. Pasteur 250, 22290-240, Rio de Janeiro, RJ, Brazil (email: )
2. Department of Economics, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rua Marquês de São Vicente 225, Rio de Janeiro, RJ, 22453-900, Brazil and BREAD (email: )
3. Columbia University, 420 W. 118th Street, New York, NY, 10027 and Sao Paulo School of Economics-FGV (email: )