Year	constant 2021 US$
1970	5296230093.479164
1971	4966779955.38712
1972	4190909980.773929
1973	3547589961.871504
1974	4349499924.696982
1975	5454610034.346582
1976	6262159979.581838
1977	4539240012.168883
1978	4580360011.138021
1979	4697849956.512449
1980	6002630001.187325
1981	5295949973.702429
1982	5787430008.232599
1983	4972960040.092474
1984	5437159948.349
1985	5177410035.133362
1986	4999210032.582283
1987	4472280046.463014
1988	5557859999.923044
1989	6593789939.880371
1990	5962589935.451744
1991	5747529993.414877
1992	5957680099.3234005
1993	5321620101.153852
1994	5808489955.037833
1995	3906409999.389203
1996	4277499972.455204
1997	4278620019.3762784
1998	4179329926.2523675
1999	3709260053.634644
2000	3903969994.5449824
2001	5846519977.569581
2002	6316960044.384008
2003	4949569917.678839
2004	5364509940.147397
2005	13045799872.398375
2006	19020820065.49836
2007	9166719957.35169
2008	6457089965.82032
2009	9129110084.533699
2010	10846360103.60719
2011	10561089980.125431
2012	9694589953.422554
2013	11014920037.269596
2014	11615679737.091064
2015	12477379981.994644
2016	11411810042.38129
2017	12596239812.850964
2018	11760590297.69898
2019	13635449771.881119
2020	15985200050.354023
2021	14401230239.86817