Year	current US$
1970	30736303702.8505
1971	34047447617.9377
1972	39175327229.4619
1973	48145276511.7945
1974	62212020999.4663
1975	75397896098.9702
1976	75624365808.1346
1977	68800041861.5198
1978	85732016075.2147
1979	109700237304.215
1980	165532516960.404
1981	213750235828.253
1982	140721690929.124
1983	111877914905.614
1984	133082824776.509
1985	144786508151.692
1986	97100796215.8621
1987	106523751200.565
1988	137787210220.993
1989	171618500943.358
1990	205504265665.484
1991	256844670552.814
1992	299161726412.725
1993	421664425037.059
1994	444443520105.821
1995	284085287955.244
1996	326500887619.418
1997	411235616038.992
1998	436129608401.083
1999	497871003052.663
2000	583451181694.053
2001	628249032955.209
2002	638350138907.69
2003	590360272094.388
2004	630150294533.287
2005	692395008004.185
2006	771758100654.085
2007	834114603747.519
2008	868479430911.016
2009	705689454663.467
2010	837005140326.317
2011	909917998364.882
2012	923120025713.203
2013	979078425937.207
2014	1029001447035.09
2015	930698815652.538
2016	850738271614.726
2017	909856329249.081
2018	949012341118.881
2019	989328890501.085
2020	828724024427.823
2021	950153268146.986