1. Canadian Loonie. The Canadian dollar's value against the US dollar has seen some significant changes over recent history. Using the following graph of the C$/US$ exchange rate for the 27 year period between 1980 and end-of-year 2007 to estimate the percentage change in the Canadian dollar's value (affectionately known as the "loonie") versus the dollar for the following periods.

a. Jan 1980-Dec 1985

b. Jan 1986-Dec 1991

c. Jan 1992-Dec 2001

d. Jan 2002-Dec 2007

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1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 Monthly Average Exchange Rates: Canadian Dollars per U.S. Dollar 0.9 80 85 90 95 00 05 Source: Pacific Exchange Rate Service 2007 by Prof. Werner Antweiler, University of British Columbia, Vancouver, BC, Canada.