Year	current US$
1960	2582520000
1961	2809800000
1962	2906600000
1963	3395109000
1964	4340427272.7
1965	4762387000
1966	4807403000
1967	4769300363.6
1968	5143093636.4
1969	5691018727.3
1970	6793635363.6
1971	7352483818.2
1972	8274084818.2
1973	10170602545.5
1974	14456703272.7
1975	18349967272.7
1976	19615267181.8
1977	25358381363.6
1978	28426956363.6
1979	27146920104.300003
1980	21558516339.5
1981	43853906170
1982	35947656019.56
1983	30232497726.069996
1984	25086465951.493
1985	26490708212.08
1986	24958780374.98
1987	27777860784.05
1988	28415169134.57
1989	30133827793.869995
1990	38223638176.85
1991	37416786575.38
1992	46249916086.95
1993	40551829975.18
1994	39693268141.43001
1995	46308431793.57001
1996	48876001974.67
1997	47977112109.18001
1998	81186490619.53
1999	74992873141.53
2000	81118902747
2001	84090267929
2002	88154113990
2003	113802631338
2004	145517767841
2005	173087172104
2006	205985524467
2007	258174279617
2008	302885668818
2009	268629234868
2010	300488571453
2011	374863900809
2012	390455840626
2013	414036716624
2014	421678050003
2015	373669635666
2016	317397021004
2017	338092143861
2018	361861675948
2019	363211688053
2020	327400989758