Year	current US$
1960	343000000
1961	287000000
1962	269000000
1963	190000000
1964	208000000
1965	219000000
1966	195260000
1967	92260000
1968	97270000
1969	112360000
1970	202160000
1971	408251560.768961
1972	355471038.557593
1973	558758429.452631
1974	5602478427.07708
1975	5585609562.30902
1976	5179842119.24904
1977	4232234051.42271
1978	1886654603.51189
1979	5547898026.01849
1980	10234800373.239
1981	3895367135.50454
1982	1612543479.02942
1983	989896299.038786
1984	1462311804.67394
1985	1667219244.28822
1986	1081354727.04366
1987	1165255358.99218
1988	651148026.537121
1989	1765591373.82711
1990	3864294618.08766
1991	4435100130.16922
1992	967110000.412502
1993	1372067195.7463
1994	1385879649.19862
1995	1443416271.06349
1996	4075717078.01769
1997	7581882901.75295
1998	7100827100.24429
1999	5450323690.52047
2000	9910901047.5379
2001	10456642866.0477
2002	7331336989.09119
2003	7128436636.00119
2004	16955637969.1635
2005	28279620717.2055
2006	42298313133.3081
2007	51333378335.6826
2008	53000575306.5368
2009	42382717738.1048
2010	32339472715.6973
2011	32639987435.7376
2012	43830638131.6587
2013	42847532137.5805
2014	34241737874.4871
2015	28283230144.31
2016	27232964319.3379
2017	39608525296.3652
2018	42838869124.791
2019	38335890478.7729
2020	36729565817.615
2021	40476363167.0316
2022	35563949955.4969