Year	current US$
1960	219400000
1961	248700000
1962	273700000
1963	335173000
1964	369639000
1965	406911000
1966	437987000
1967	421225000
1968	508137000
1969	571112000
1970	518223000
1971	690370000
1972	1296039000
1973	1993984000
1974	4042611000
1975	4186100000
1976	7404508000
1977	6358629000
1978	6988365000
1979	12691393000
1980	18090432000
1981	17792262426.625
1982	17592540243.15
1983	14987493438.584
1984	14836731530.76
1985	13540053372.869
1986	10353578831.118
1987	11191134071.237
1988	11585631409.202002
1989	13117836603.074999
1990	17091300082.421
1991	15564079624.505
1992	17893400381.204002
1993	17557012408.809998
1994	19490330268.596
1995	22645916893.761
1996	25338464504.679
1997	29149463533.012
1998	26475088144.861004
1999	29291684066.262
2000	35812092547
2001	35157673172
2002	36666391628
2003	44212922762
2004	55712325492
2005	72679851621
2006	89444886076
2007	106598788876
2008	146280323980
2009	101665571527
2010	143779729593
2011	208994497955
2012	221942091877
2013	224043667587
2014	228879007171
2015	149939189331
2016	120481569951
2017	133045883182
2018	159212204937
2019	144976217328
2020	114867636114