1. Laboratory of Climate and Environmental Sciences, UMR - Commissariat à l’énergie atomique (CEA), 91190 Gif-sur-Yvette, France
2. Institute for Capacity Development, The International Monetary Fund, Washington, DC 20431
3. Department of Finance, University of Notre Dame, Notre Dame, IN 46556
4. Department of Economics, Duke University, Durham, NC 27708