Deficits and surpluses - last 25 years

This graph shows Canada's annual budget deficit over the last 25 years (1985-2010). Earlier years are not directly comparable because of a change in accounting rules in 1983-1984 ("accrual accounting").
 The sources are Government of Canada websites:

http://www.fin.gc.ca/frt-trf/2010/frt-trf-1001-eng.asp

http://www2.parl.gc.ca/parlinfo/compilations/federalgovernment/primeministers/biographical.aspx