Dept of Economics, Simon Fraser University, Canada V5A 1S6. Various versions of this paper were given as talks and seminars between May-August 1988 while the author was Visiting Canadian Fellow at Macquarie University, Sydney. Thanks are due to audiences at the Universities of Adelaide, Curtin, Newcastle, New England, New South Wales, Queensland and Tasmania, as well as the Canada/Australian Businessmen's Association in Sydney, the Australian Institute of Bankers and the Economic Society of Perth. This paper also formed the basis of the Annual Canadian Studies Lecture at Macquarie University. The School of Economic and Financial Studies at Macquarie is warmly thanked for its exceptional hospitality and logistic support, as is the Consulate of Canada in Sydney.