Year	current US$
1970	47901093.8227543
1971	52515091.8116502
1972	59754321.670537
1973	73864216.9275084
1974	85865301.2205876
1975	104098998.279832
1976	107949210.983263
1977	122588534.400914
1978	109620614.247549
1979	121411118.005612
1980	145943157.148997
1981	145201903.435451
1982	152778498.455777
1983	126478622.386626
1984	116042017.975985
1985	100989894.756063
1986	112983012.817248
1987	131312110.554449
1988	139285799.02926
1989	145699624.66964
1990	157443468.664697
1991	153241999.453783
1992	157033302.05568
1993	180842348.674014
1994	208377281.653317
1995	260225729.525325
1996	318073620.65872
1997	383890377.797556
1998	339566154.634222
1999	393757072.478101
2000	503833871.206917
2001	479304807.645752
2002	537196021.808387
2003	704166569.641013
2004	761990182.216596
2005	825129821.506868
2006	945134502.338003
2007	752275236.149874
2008	740621993.234382
2009	862908075.957956
2010	1057945584.50639
2011	1274072619.37059
2012	1464877929.99986
2013	1259966402.16262
2014	1421171708.52746
2015	1395116845.72796
2016	1519145838.00178
2017	1284280291.72711
2018	2699707995.92368
2019	1904886346.2133
2020	1972261832.48123
2021	2727395331.60677