Year	constant 2021 US$
1970	176819998.2643128
1971	185020002.84194952
1972	221660000.32424933
1973	254020007.13348392
1974	280250000
1975	329620005.10841656
1976	412159997.940064
1977	351210005.0728769
1978	365879998.20709234
1979	426500005.5320561
1980	426940004.42326075
1981	384830001.4100966
1982	369060001.1833012
1983	382160004.92125744
1984	331790006.94304717
1985	328519992.48564243
1986	334230004.65333456
1987	459970005.64634836
1988	373820009.0825559
1989	332059995.5022335
1990	356060006.4098834
1991	323749999.9701978
1992	398349999.79473674
1993	494869998.8815932
1994	866449995.9945681
1995	661650005.1021575
1996	633049988.7466426
1997	520550000.6675724
1998	568089994.6689603
1999	537659999.3705752
2000	583559994.6975709
2001	688200007.4386603
2002	582400003.4332279
2003	617930004.1198733
2004	614049998.2833867
2005	748330004.6920774
2006	773279985.4278574
2007	746669981.0028079
2008	738640005.1116939
2009	833299997.3297117
2010	837619990.3488163
2011	913309997.5585933
2012	937520011.901855
2013	970969987.8692627
2014	844520004.2724613
2015	993759985.9237669
2016	814420017.2424326
2017	1027319999.6948245
2018	1054169984.8175048
2019	1062689985.2752683
2020	1441570011.1389165
2021	1540339977.2644038