Year	current US$
1960	2423920000
1961	2618000000
1962	2722300000
1963	3115709000
1964	3943207272.7
1965	4216477000
1966	4533223000
1967	4710464363.6
1968	5046327636.4
1969	5566809727.3
1970	6618622363.6
1971	7293316818.2
1972	8199356818.2
1973	10128869545.5
1974	15217321272.7
1975	20843501272.7
1976	21629966181.8
1977	27414506363.6
1978	30335228363.6
1979	24883747104.300003
1980	18600215339.5
1981	59403998870
1982	52408963437.36
1983	36238827052.27
1984	31065394143.460007
1985	32819886094.380005
1986	29479017691.53
1987	30116063644.840004
1988	32472889630.329998
1989	34065025829.98
1990	37738435007.71999
1991	32088034279.94
1992	39098911711.36999
1993	33749536685.610004
1994	32087649851.050003
1995	37421286302.5
1996	37730218547.9
1997	37825667021.62
1998	43074125915
1999	39920712358.43001
2000	41475822953
2001	48147081248
2002	50691204121
2003	65280911839
2004	80975100559
2005	99881793355
2006	116992268331
2007	148655805828
2008	195954160697
2009	192659605558
2010	206953933526
2011	247978345696
2012	262028995123
2013	294091733119
2014	295798375976
2015	256861545215
2016	216932968898
2017	233595195998
2018	239789683891
2019	247212186193
2020	233469830664