Year	current US$
1964	43400000
1965	53300000
1966	54600000
1967	59400000
1968	78600000
1969	100625000
1970	105088000
1971	119736000
1972	218353000
1973	516522000.00000006
1974	700028000
1975	475231000
1976	593989000
1977	723375000
1978	715046000
1979	883275000
1980	1133187000
1981	839278000
1982	773035000
1983	822219000
1984	893815000
1985	917624000
1986	1047492000
1987	1186087166
1988	1443120573
1989	1434203057
1990	1265515386
1991	1407335981
1992	1699480000
1993	2624781000
1994	3015866547
1995	3131576022
1996	3111047671
1997	2722245465
1998	2359245868
1999	2791162352
2000	562197992
2001	567562871
2002	905344983
2003	1032546258.0000001
2004	1870504905
2005	2512058057
2006	2572082727
2007	3008548977
2008	4082723468
2009	3595842420
2010	4113965336.9999995
2011	5501046983
2012	4525019168
2013	4008634161
2014	5854184974
2015	6577588362
2016	6492684220
2017	6955882653
2018	7315695731
2019	7182746860
2020	6703940512