Year	constant 2021 US$
1970	7278250041.738158
1971	7038109875.202179
1972	7146699964.158239
1973	6250390114.277602
1974	8385759912.133221
1975	7242059950.94776
1976	6350289980.083706
1977	8356570134.907968
1978	7927229852.586987
1979	7504499945.059419
1980	9112120104.379951
1981	11210599964.410072
1982	10088959957.480438
1983	9380910062.07467
1984	9729769960.284245
1985	11346119709.61094
1986	9206039968.72902
1987	9179829972.74399
1988	9280300083.875662
1989	9888130009.17435
1990	11656940005.30244
1991	11562289904.743437
1992	10957510033.369062
1993	11438819959.759718
1994	11926650100.827215
1995	11061100101.23253
1996	10681100006.10352
1997	10575019993.782053
1998	12679649902.343752
1999	13581169840.812695
2000	11887570132.255566
2001	12594670018.672945
2002	13449999883.174904
2003	11478880188.941965
2004	11576860012.650496
2005	11525969974.994665
2006	12723640027.0462
2007	12281340018.749237
2008	12857110055.923481
2009	13313469939.231874
2010	11527119979.858406
2011	12455039924.621586
2012	14171119960.784924
2013	12547570069.31305
2014	13885930238.723757
2015	13448329878.807077
2016	13009390030.86091
2017	13395019994.735716
2018	9727219949.722305
2019	8312819998.741158
2020	13236670042.514805
2021	11370070030.570036