In inflation-adjusted 2004 dollars, the year the NEP took effect (1980) per capita had fiscal contributions by Alberta to the federal government increase 77% over 1979 levels from $6,578 in 1979 to $11,641 in 1980. In the five years prior to the NEP (1975–1979), the per capita contributions by Alberta had approximated the fluctuations in the price of oil (see graph Fluctuations: Oil Prices & Alberta Per Capita Federal Contributions 1975-1981). In 1980, however, the inflation-adjusted average price of oil was only 5% higher than the previous year, but the per capita contributions from Alberta rose 77% (see graph Fluctuations: Oil Prices & Alberta Per Capita Federal Contributions 1975-1981).