Year	current US$
1960	2049750000
1961	2219050000
1962	2429081000
1963	3044970000
1964	4201710000
1965	4246613000
1966	4685426000
1967	4622531000
1968	5282379000
1969	6014729636
1970	6277097455
1971	5261609545
1972	6952378000
1973	9482143000
1974	12604913182
1975	11162851727
1976	11834650182
1977	15059646182
1978	15735117182
1979	19790134752
1980	22214424425
1981	22057644347.64
1982	20079755854.61
1983	19341610933.944004
1984	20411833679.6
1985	20346472848.871002
1986	22150952440.911003
1987	21856767262.312004
1988	25233061011.239998
1989	26353744008.325
1990	27611074279.17
1991	27875651768.190002
1992	29628722344.708
1993	27900664149.59
1994	32137214554.325
1995	39028157678.11099
1996	43724909627.489
1997	45925889204.492004
1998	41026148993.031
1999	39458205896.88
2000	68414860287
2001	73429937468
2002	78114500932
2003	86833000656
2004	101509181225
2005	117510300537
2006	123922075715
2007	158982303664
2008	194504440176
2009	144468381098
2010	206478947253
2011	247242373771
2012	233199873336
2013	240986403271
2014	235026998486
2015	181568913118
2016	168881297853
2017	189471106065
2018	212082686790
2019	201869563083
2020	180533243228