Year	constant 2021 US$
1970	3304149951.9646163
1971	3498750018.0676575
1972	3797890041.5003295
1973	3830179988.861084
1974	5367859993.577005
1975	6833750008.583073
1976	6051860012.054445
1977	6912419988.632198
1978	7887449923.515319
1979	9599709981.441511
1980	10648089997.291576
1981	11103669884.681704
1982	12144059967.994692
1983	12039640123.633675
1984	12314459776.878363
1985	14261039956.092836
1986	13403239928.483969
1987	13733100020.647064
1988	14376240056.276329
1989	14331689865.112305
1990	15686299941.06294
1991	14730480037.68921
1992	15747409928.679491
1993	14906450096.130367
1994	14351230020.523077
1995	13457149871.826172
1996	10511330005.64576
1997	11173139955.520641
1998	10808109958.648687
1999	10492840011.59668
2000	11800730035.78187
2001	12925740022.659307
2002	16770769834.518435
2003	21152470178.604137
2004	18811249705.314636
2005	18582789993.28615
2006	20316580111.503624
2007	20751680010.31876
2008	23153240047.45485
2009	25534140121.459976
2010	25172019966.12551
2011	27281510318.75612
2012	25574370029.449482
2013	28148420082.092297
2014	24798370348.930378
2015	26665950030.803696
2016	26497279972.07643
2017	28978569827.079784
2018	27525489810.94363
2019	30678849828.72011