Gunther Markwardt University of Technology Dresden   Muenchner Platz 1-3 Dresden, 01062 Germany   gunther.markwardt@tu-dresden.de             JEL Areas: E3 : Prices, Business Fluctuations, and Cycles: General (includes Measurement and Data) E6 : Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General