Year	current US$
1970	28400000.393390693
1971	43399999.73773958
1972	33500000.11920932
1973	45790000.39398671
1974	70930001.43766405
1975	53329999.41334133
1976	49490000.25540591
1977	45319999.039173044
1978	64300000.81658363
1979	96210000.9918213
1980	93750000.26822096
1981	97370000.28230242
1982	57919999.18222428
1983	105560002.80007721
1984	84649999.0336596
1985	68999999.89941719
1986	80209999.44582579
1987	130460000.36597255
1988	239210005.5590272
1989	326769996.7250222
1990	402460002.2211668
1991	396880005.2106377
1992	506180001.9741056
1993	342470004.0519235
1994	476160005.3403527
1995	409699996.0038812
1996	316770002.9890985
1997	201870002.26415697
1998	196359999.69393015
1999	195959997.8309124
2000	159900001.1812896
2001	158120000.22456032
2002	236720006.36160368
2003	269640003.1484663
2004	231520002.3129585
2005	299329993.32807934
2006	361330007.7877946
2007	284100009.0129673
2008	538709988.4115164
2009	733970015.2147567
2010	1051869982.5238429
2011	502889998.4955784
2012	392530002.3294994
2013	919110021.907836
2014	523379990.4268232
2015	307289991.3638832
2016	226049998.9092349
2017	414300002.2247431
2018	485609983.1871695
2019	253990009.40285563
2020	612699990.1905656
2021	637339989.6565828
2022	35329999.2922696