Year	current US$
1971	50000.0007450581
1972	1789999.96185303
1973	5260000.228881841
1974	3599999.90463257
1975	250000
1978	109999.999403954
1979	90000.0035762787
1980	11649999.6185303
1981	28899999.6185303
1982	19329999.9237061
1983	40889999.3896484
1984	3849999.90463257
1985	29440000.5340576
1986	11220000.2670288
1987	9630000.11444092
1988	2769999.98092651
1989	4510000.228881841
1990	28799999.237060502
1991	48450000.762939505
1992	49619998.9318848
1993	207339996.33789098
1994	198960006.71386698
1995	106400001.52587901
1996	216949996.94824198
1997	199020004.272461
1998	235639999.38964802
1999	303790008.544922
2000	117300003.05175799
2001	131949996.948242
2002	127120002.746582
2003	147169998.168945
2004	219919998.168945
2005	293089996.33789104
2006	338700012.207031
2007	307130004.88281304
2008	329440002.441406
2009	282390014.64843804
2010	223440002.44140598
2011	402399993.89648396
2012	490250000
2013	551369995.117188
2014	525059997.558594
2015	348660003.66210896
2016	627989990.234375
2017	666780029.296875
2018	302309997.558594
2019	439850006.10351604
2020	943690002.441406
2021	181679992.67578098
2022	320540008.544922