Year	NFL, current US$
1971	797411.5
1972	504525.8
1973	26220.2
1974	171208.8
1975	2413241.4
1976	915201.3
1977	2510286.2
1978	801531.3
1979	-275207.1
1980	1278156.5
1981	903749.8
1982	905495.3
1983	-106912.5
1984	-2712857.8
1985	-43696
1986	-353268.7
1987	-1474863
1988	-4071680.2
1990	-1705198.9
1991	-484465.8
1992	-316937.8
1993	-113107.8
1995	6068.9
1996	49360.7
1997	45411
1998	39346.5
1999	31450
2000	21104.1
2001	-281145.3
2002	0
2003	0
2004	0
2005	0
2006	0
2007	0