Year	current US$
1971	32629270315.708
1972	35096697234.2177
1973	45821870258.1768
1974	43636953866.5409
1975	28285844831.2155
1976	33733514795.9816
1977	37212834682.972
1978	51194633453.2659
1979	54940962451.5865
1980	42107011918.7133
1981	19933953380.1979
1982	18782916303.3422
1983	22277017507.2117
1984	24661369927.0728
1985	30990716495.0877
1986	62180260090.2138
1987	64302079570.5933
1988	87636096122.3924
1989	102907987285.716
1990	153943136418.329
1991	150951302291.076
1992	163310138880.276
1993	126798302451.19
1994	141727343609.178
1995	173594422040.693
1996	150253944802.109
1997	137152466010.422
1998	149759049568.146
1999	131116124285.785
2000	112602113837.827
2001	109264641570.46
2002	115317772765.424
2003	115788453613.835
2004	203470446070.861
2005	197881483194.011
2006	282753864561.364
2007	388238268090.209
2008	368287363503.342
2009	201802427805.247
2010	263799313852.747
2011	377608328266.578
2012	308897008366.523
2013	315403987135.5
2014	375563200917.578
2015	348979231200.336
2016	371387038896.761
2017	409284769483.801
2018	468003097011.018
2019	438062463553.223
2020	376436280707.827
2021	472132090887.73