Year	NFL, current US$
1970	-16000
1971	-16000
1972	-37000
1973	-21000
1975	4102000
1976	-587000
1977	-312000
1978	2237000
1979	936000
1980	-1379000
1981	-1012000
1982	156000
1983	9558000
1984	11516000
1985	-2632000
1986	-5387000
1987	-6061000
1988	-5362000
1989	-4603000
1990	-5240000
1991	-1197000