Year	constant 2021 US$
1970	6079580058.336258
1971	6343550008.594991
1972	6503229960.560803
1973	6811379926.241938
1974	9719350036.144257
1975	11509880048.036573
1976	10585790042.877197
1977	11432079987.525942
1978	13258139959.335335
1979	15276140072.822575
1980	15872400009.155281
1981	16210939949.989328
1982	17091379927.635206
1983	16963499878.88337
1984	18159340033.531204
1985	20612330022.811897
1986	20788000108.71888
1987	20319290069.58009
1988	21594749929.4281
1989	22483039939.880367
1990	23658950209.617638
1991	24130290107.72705
1992	23503250140.07092
1993	21837919837.951668
1994	23973159980.77394
1995	21470880184.17358
1996	18651050045.01343
1997	17857239971.160896
1998	18142949993.133556
1999	17362269842.14784
2000	17486490072.25038
2001	21734110050.20142
2002	26856969974.517826
2003	30992760122.299206
2004	29967359939.575214
2005	30626759695.053127
2006	33657729671.478275
2007	35528429523.46803
2008	36671640041.351326
2009	42231070194.24439
2010	44498729881.28664
2011	42490020221.71022
2012	41428350208.28249
2013	39391469890.59449
2014	37020079933.16651
2015	39682510334.01491
2016	39185380344.39087
2017	41802600082.397484
2018	41473300056.45754
2019	43388760288.23856
2020	54291840053.558395
2021	46888540649.41408