Year	current US$
1970	850694.326432756
1971	3246033.06128262
1972	5567635.63054204
1973	11392171.8804819
1974	79202339.043815
1975	83854732.5148787
1976	102953910.527323
1977	112014539.633342
1978	115494771.090264
1979	289975122.268124
1980	401505502.042749
1981	266787784.050963
1982	152048520.47067
1983	187575854.710093
1984	175683606.592439
1985	172012309.855214
1986	64369121.1819568
1987	93077639.5864593
1988	70012827.3874817
1989	104757973.79397
1990	128840115.884846
1991	55721739.8952933
1992	47990504.8280689
1993	42963333.6937566
1994	36490521.0397865
1995	38400424.3676653
1996	50152800.9797973
1997	37316569.3870866
1998	10918398.8381775
1999	29855147.354821
2000	68913084.2037341
2001	47073692.2646911
2002	45716551.9529488
2003	49491010.8806083
2004	70153673.887673
2005	113619560.727116
2006	143614431.557686
2007	201068103.031739
2008	304978108.641698
2009	143097007.677313
2010	107431848.933949
2011	158242239.142019
2012	181844904.450205
2013	179327653.646659
2014	203361852.042236
2015	104209782.128541
2016	74102450.7936115
2017	136428358.582975
2018	239439330.31878
2019	223734844.862303
2020	116246962.540193
2021	274524166.995881