Year	current US$
1960	2367800000
1961	3158200000
1962	2470632000
1963	2385959000
1964	2823733000
1965	2972729000
1966	3064439000
1967	4503620000
1968	4914563000
1969	5201108000
1970	5835459000
1971	6147878000
1972	7100898000
1973	10118020000
1974	15654035000
1975	16349307000
1976	17549772000
1977	20321873000
1978	34860993000
1979	45620757000
1980	61304143000
1981	69489366100
1982	68852463427.42
1983	72585945265.65
1984	73893673610.37
1985	84400598923.76
1986	84283304973.8
1987	94677370137.31999
1988	121232751075.93999
1989	142312398793.21
1990	159202029427.40997
1991	185422773824.65002
1992	213776653447.51
1993	252603444841.19
1994	298351360040.59
1995	373502504213.92
1996	389279803944.6
1997	387195449305.43
1998	319077473069.37006
1999	357244722438.99
2000	463444620318
2001	470538045725
2002	537368988920
2003	678525798308
2004	895690105735
2005	1051133036965
2006	1229288140659
2007	1460034884080
2008	1767893652862
2009	1499529890381
2010	2054820330550
2011	2550151966680
2012	2684484300357
2013	2842219499379
2014	2850323983362
2015	2426863507105
2016	2422141312117
2017	2800199249042
2018	3212179025087
2019	3136488697646
2020	3048228383121