Year	current US$
1962	37800000
1963	44600000
1964	53900000
1965	49300000
1966	26600000
1967	30600000
1968	47570000
1969	51770000
1970	45105000
1971	62659000
1972	77562000
1973	107952000
1974	127406000
1975	162217000
1976	155657000
1977	227391000
1978	241336000
1980	347838000
1981	511737000
1982	330037000
1983	348816000
1984	256243000
1985	238983000
1986	284077000
1987	459640171
1988	298264435.5
1989	399407643.8
1990	394437213.3
1991	161125532.8
1992	227149095.8
1993	291574812.3
1994	297459829.09999996
1995	244738597.5
1996	282884391.90000004
1997	290715050
1998	257198161.9
1999	285037712
2000	229738400
2001	219833558
2002	257234115.99999997
2003	262323424
2004	327886753
2005	399115959
2006	545279175
2007	562097145
2008	874215078
2009	768209853
2010	831028664
2011	1248172625
2012	1297579400
2013	1514463832
2014	1694009383
2015	1844602183
2016	2091836321.0000002
2017	2505940776
2018	2614150533
2019	3066791972
2020	4184107283.9999995