Eisei Ohtaki Department of Economics, Kanagawa University, Japan   Rokkakubashi 3-27-1 Kanagawa-ku Yokohama-shi, Kanagawa 221-8686 Japan   ohtaki@kanagawa-u.ac.jp             JEL Areas: E5 : Monetary Policy, Central Banking, and the Supply of Money and Credit: General E6 : Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General