Year	NFL, current US$
1970	6443000
1971	7155000
1972	9838000
1973	9510000
1974	13762000
1975	19102000
1976	18241000
1977	15560000
1978	11784000
1979	5177000
1980	-483000
1981	9141000
1982	10729000
1983	6571000
1984	6797000
1985	16215000
1986	12806000
1987	21074000
1988	11344000
1989	-249000
1990	-1214000
1991	11650000
1992	25190000
1993	22307000
1994	4250000
1995	17412000
1996	14126000
1997	24094000
1998	14109000
1999	3787000
2000	-2535000
2001	-11731000
2002	-11905000
2003	-16221000
2004	-15140000
2005	-15255000
2006	-15152000
2007	-15198000
2008	-6920000
2009	-16068000
2010	-11360000
2011	-10681000
2012	-6674000
2013	463000
2014	-7230000
2015	-8241000
2016	-8527000
2017	-13462000
2018	-13760000
2019	-12737000
2020	-11937000
2021	-11299000
2022	-10335000
