Peter Summers Melbourne Institute of Applied Economic and Social Research   Melbourne Institute Faculty of Economics & Commerce The University of Melbourne Melbourne, Victoria 3010 Australia   p.summers@unimelb.edu.au   http://www1.ecom.unimelb.edu.au/iaesrwww/people/psummers/           JEL Areas: E3 : Prices, Business Fluctuations, and Cycles: General (includes Measurement and Data) E0 : Macroeconomics and Monetary Economics: General