Year	NFL, current US$
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	2171000
1977	4079000
1978	4383000
1979	8923000
1980	17755000
1981	-1511000
1982	453000
1983	-403000
1984	2947000
1985	19868000
1986	-122000
1987	5496000
1988	0
1989	-78000
1990	-78000
1991	-78000
1992	-29000
1993	0
1994	-75000
1995	-254000
1996	-233000
1997	-129000
1998	-129000
1999	-129000
2000	-178000
2001	0
2002	0
2003	0
2004	0
2005	0
2006	0
2007	0
2008	0
2009	0
2010	0
2011	0
2012	0
2013	0
2014	0
2015	0
2016	0
2017	0
2018	0