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	6802435363.6
1971	7366583818.2
1972	8293584818.2
1973	10195202545.5
1974	14481303272.7
1975	18380267272.7
1976	19652867181.8
1977	25403681363.6
1978	28484056363.6
1979	27230620104.300003
1980	21655916339.5
1981	43947006170
1982	36044856019.56
1983	30316597726.069996
1984	25172665951.493
1985	26584908212.08
1986	25057408528.64
1987	27872660784.05
1988	28538875028.07
1989	30298572157.569996
1990	38410094734.049995
1991	37589153157.67999
1992	46442225500.85
1993	40790272907.18
1994	39899523920.630005
1995	46548822284.770004
1996	49256283231.57
1997	48313123365.58001
1998	81569524938.23
1999	75426408728.23
2000	81457517717
2001	84561646303
2002	88569730002
2003	114172393114
2004	146015355598
2005	173737799653
2006	206714593236
2007	259034648580
2008	304484436474
2009	269566213141
2010	301668878708
2011	376584851914
2012	391735656984
2013	414961428038
2014	422753396816
2015	374653373525
2016	319045010737
2017	339440606531
2018	362998227307
2019	364649424051
2020	328712259294