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	373570002.79426616
1991	423239993.87025785
1992	439409994.11605257
1993	238010000.58650982
1994	203419999.71866626
1995	2860450091.24279
1996	381139998.61478794
1997	186449997.24626556
1998	180919999.24182895
1999	191459999.15897846
2000	152469999.2351234
2001	144880000.11444104
2002	163590000.15258792
2003	265439996.95777893
2004	306149996.9959263
2005	7090000.15258789
2006	6940000.05722046
2007	7500000
2008	21170000.0762939
2009	12579999.923706101
2010	22530000.6866455