Year	constant 2021 US$
1960	8830830030.44128
1961	9730229996.08517
1962	8585020156.383511
1963	7725469992.96546
1964	6865159987.92648
1965	5730029983.3715
1966	5240350035.73447
1967	3935619995.63128
1968	3543039948.38893
1969	3653439936.16849
1970	6745659985.81052
1971	6220170022.36843
1972	6213209997.2963295
1973	11712809884.7568
1974	16839410083.651499
1975	23064150110.7216
1976	23157410156.1904
1977	25362850299.239197
1978	22664629900.3363
1979	23391560051.8286
1980	23026229955.4348
1981	22603839803.5765
1982	18866420119.285603
1983	16688820368.528399
1984	15933440195.560501
1985	17752020099.163097
1986	14560799955.3084
1987	12685849855.422998
1988	9550170089.24484
1989	9660480060.100561
1990	22129800238.6093
1991	20997490188.5986
1992	14450800227.6421
1993	11220649802.4464
1994	12735520022.3923
1995	8012800117.015841
1996	11868710077.7626
1997	8282830106.7352295
1998	9271629948.61603
1999	7930070008.27789
2000	7494150024.41406
2001	8090360065.46021
2002	7508080041.88538
2003	11652639904.0222
2004	13767029722.2137
2005	35064630117.4164
2006	20785109586.7157
2007	20172210355.7587
2008	25381749794.0063
2009	14215430000.305199
2010	13267209767.341599
2011	15856700096.1304
2012	13534659774.7803
2013	25648790191.650402
2014	32188160079.956097
2015	20894389633.1787
2016	28077009567.2607
2017	29375450363.159203
2018	33448909439.0869
2019	29187039772.0337
2020	29563820465.087902
2021	34622419754.0283
2022	30402970489.502