Year	current US$
1974	1679999.94754791
1975	1590000.0333786
1976	2099999.90463257
1977	1490000.0095367401
1978	3240000.00953674
1979	740000.009536743
1980	1490000.0095367401
1981	990000.009536743
1982	569999.992847443
1983	379999.99523162795
1984	349999.99403953605
1985	70000.0002980232
1986	1970000.02861023
1987	2190000.05722046
1988	12090000.1525879
1989	1230000.01907349
1990	2990000.00953674
1991	-289999.99165535
1993	-460000.00834465
1994	-1019999.98092651
1995	-569999.992847443
1996	-2029999.97138977
1997	-3799999.95231628
1998	159999.99642372102
1999	3009999.99046326
2000	-3599999.90463257
2001	-779999.971389771
2002	-1850000.02384186
2003	-1429999.94754791
2004	389999.98569488496