Year	current US$
1973	180000.00715255702
1974	1580000.04291534
1976	709999.978542328
1985	90000.0035762787
1986	109999.999403954
1987	1289999.96185303
1988	1629999.99523163
1989	3660000.08583069
1990	1200000.04768372
1991	34040000.9155273
1992	7090000.15258789
1994	19079999.9237061
1995	4559999.94277954
1997	9960000.03814697
1998	10140000.3433228
1999	3490000.00953674
2000	-790000.021457672
2001	23420000.0762939
2002	7119999.88555908
2003	1980000.01907349
2004	660000.026226044