Year	NFL, current US$
1977	2998332.6
1978	9241404.3
1979	9395805.8
1980	7996938.2
1981	107364.5
1983	-718452
1984	-2041307.6
1985	-4005801.3
1986	-5484466.5
1987	-6120812.2
1988	-5378274.2
1989	-3439418.2
1990	-989721.4
1991	-124537.8