Year	constant 2021 US$
1970	12047830130.815514
1971	12485409945.547588
1972	13144929952.859888
1973	15896529854.916042
1974	22020289946.83177
1975	25468489998.877052
1976	23262990054.607403
1977	23659049950.480473
1978	25072780031.95675
1979	29973630176.544193
1980	32052760044.217113
1981	30832569770.455368
1982	31470129926.02589
1983	28772420041.084305
1984	30300589917.18293
1985	31992539922.71424
1986	31436500264.287006
1987	30801340133.667004
1988	30838579894.332222
1989	32346719835.28137
1990	34416020270.49663
1991	33440550067.394974
1992	32006770234.778534
1993	30066869897.5444
1994	33009529956.907055
1995	28232470115.203415
1996	25118149960.62965
1997	24469669990.956787
1998	25241789976.835262
1999	24080559902.668015
2000	24654720108.985912
2001	30682650056.838985
2002	35607689994.33518
2003	38593550117.49269
2004	38201099906.92141
2005	45677639576.91196
2006	54058719811.43954
2007	47019109512.329124
2008	47557279991.14992
2009	56228500261.306786
2010	59767489975.92928
2011	58705440157.89035
2012	59962640309.333855
2013	65259219954.49069
2014	61609089765.54873
2015	67936640029.907295
2016	69681230593.68137
2017	77676549365.99734
2018	80465790365.21916
2019	82331219760.89482
2020	98529739898.6817
2021	86002001136.77982