Year	NFL, current US$
1972	541638
1973	-43700.3
1974	-117706.1
1975	-119022.5
1976	-46164
1977	540587.3
1978	1981284.9
1979	1515577.6
1980	2734630.1
1981	313834.8
1982	364406.6
1983	-178543.9
1984	1833178.3
1985	399360.7
1986	303975.4
1987	720403.8
1988	1486721.2
1989	-170496.7
1990	-393716.4
1991	244970
1992	-228195.2
1993	-240179.5
1994	-716031.3
1995	-526481.4
1996	-515383.7
1997	-341270.3
1999	-155882.7
2000	-150366.6
2001	-145025.7
2002	-91934.9
2007	0
2019	0
2020	0