in Financial Intermediation, the Volatility and Risk Institute, World Bank, WU Vienna, for comments and suggestions and Sophie-Dorothee Rothermund and Christian Schmidt for excellent research assistance. The views expressed herein are those of the authors and do not necessarily reflect the views of the National Bureau of Economic Research. NBER working papers are circulated for discussion and comment purposes. They have not been peer-reviewed or been subject to the review by the NBER Board of Directors that accompanies official NBER publications.