Year	current US$
1975	4199999.80926514
1976	2799999.95231628
1977	2920000.07629395
1978	1200000.04768372
1979	-239999.994635582
1980	1429999.94754791
1981	1080000.04291534
1982	1039999.96185303
1983	3119999.8855590797
1984	2460000.03814697
1985	4750000
1986	4630000.11444092
1987	3940000.05722046
1988	4070000.1716613797
1989	5380000.11444092
1990	9560000.4196167
1991	6769999.98092651
1992	7880000.11444092
1993	5610000.1335144
1994	4650000.09536743
1995	9180000.30517578
1996	2000000
1997	3759999.99046326
1998	1820000.05245209
1999	259999.990463257
2000	889999.985694885
2001	759999.990463257
2002	2289999.96185303
2003	600000.023841858
2004	340000.00357627904
2005	349999.99403953605
2006	860000.014305115
2007	280000.001192093
2008	200000.00298023198
2009	150000.005960464
2010	39999.9991059303
2011	-59999.9986588955