Year	current US$
1970	3390000.015497211
1971	829999.9833107
1972	719999.998807907
1973	1789999.946951862
1974	3489999.8903274518
1975	5189999.93801116
1976	3690000.05722046
1977	4860000.0143051185
1978	13650000.095367428
1979	6269999.98092652
1980	5049999.77350235
1981	7719999.849796292
1982	10709999.769926107
1983	4339999.91416931
1984	639999.985694885
1985	730000.0097602605
1986	-820000.022649765
1987	560000.002384182
1988	469999.969005586
1989	-20000.04053115798
1990	1430000.066757201
1991	8339999.9737739535
1992	26409999.838098876
1993	42710000.3957749
1994	35590000.74863436
1995	90479996.56200406
1996	66410000.97990027
1997	12239999.830722848
1998	26709999.680519104
1999	24899999.81224538
2000	15329999.845474958
2001	13379999.995231628
2002	17309999.94277955
2003	27800000.190734856
2004	31860000.133514423