Johanna Kuehnel University of Heidelberg   Alfred-Weber-Institute Bergheimer Str. 58 Heidelberg, BW 69115 Germany   johanna.kuehnel@awi.uni-heidelberg.de   http://www.awi.uni-heidelberg.de/wipo/           JEL Areas: O4 : Economic Growth and Aggregate Productivity: General E6 : Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General