Mei Dong University of Melbourne   111 Barry Street Department of Economics University of Melbourne Parkville, VIC 3010 Australia   mei.dong@unimelb.edu.au             JEL Areas: E5 : Monetary Policy, Central Banking, and the Supply of Money and Credit: General E2 : Macroeconomics: Consumption, Saving, Production, Employment, and Investment: General (includes Measurement and Data)