Year	current US$
1970	2460568.38894093
1971	2319845.54231225
1972	1948559.91291365
1973	1917569.46294718
1974	4081219.95465358
1975	3978219.55049302
1976	3825016.40977547
1977	5029272.10514137
1978	5249494.96183554
1979	4882289.07955416
1980	5830555.7200357
1981	4717023.69376724
1982	3733414.42977836
1983	2144703.57542629
1984	4735180.11190177
1985	3962077.94208694
1986	4252770.92982004
1987	4168542.65198069
1988	2692338.44794663
1989	2141397.30333831
1990	2298106.78485641
1991	3540502.09597998
1992	2534789.32204036
1993	5541087.08271695
1994	37685320.3097737
1995	41129065.5966319
1996	46034302.2534167
1997	34369775.6484057
1998	12623523.5913393
1999	16065531.2791061
2000	21790918.440646
2001	9274184.96160006
2002	21478474.8109852
2003	31647520.4996458
2004	47814440.329127
2005	43508928.2753365
2006	45604669.9479464
2007	64440730.8833975
2008	80211981.9443068
2009	107837306.897686
2010	153763029.805566
2011	247085472.163493
2012	302929759.183658
2013	201845628.406009
2014	111720544.659219
2015	87200921.0767902
2016	344203105.612171
2017	277818112.140198
2018	87077203.4027966
2019	100013179.905624
2020	107226027.474956
2021	584679854.123822