Walter H. Fisher Institute for Advanced Studies (IHS)   Institute for Advanced Studies Department of Economics and Finance Stumpergasse 56 Vienna, A-1060 Austria   fisher@ihs.ac.at   http://www.ihs.ac.at/vienna/Personal_Page/Walter-H.-Fisher-1.htm           JEL Areas: E6 : Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General F4 : Macroeconomic Aspects of International Trade and Finance: General