1. Department of Economics and Stanford Institute for Economic Policy Research, Stanford University, 579 Serra Mall, Stanford, CA 94305, and NBER (email: )
2. MIT Sloan School of Management, 100 Main Street, Cambridge, MA 02142, and NBER (email: )
3. Center for Economic Studies, US Census Bureau, 4600 Silver Hill Road, Suitland, MD 20746 (email: )
4. US Census Bureau, 4600 Silver Hill Road, Suitland, MD 20746 (email: )
5. Economics and Planning Unit, Indian Statistical Institute, 7 S.J.S. Marg, New Delhi 110067, India (email: )
6. The Eitan Berglas School of Economics, Tel Aviv University, P.O.B 39040, Ramat Aviv, Tel Aviv 6997801, Israel, and University College London (email: )
7. Department of Economics and Sloan School of Management, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, CEP, and NBER)