Year	current US$
1960	324190000
1961	329810000
1962	360670000
1963	413800000
1964	514900000
1965	575600000
1966	626500000
1967	684400000
1968	728400000
1969	822590000
1970	950410000
1971	1033720000
1972	1286410000
1973	1833490000
1974	2274670000
1975	1938480000
1976	1810430000
1977	2028820000
1978	2418320000
1979	3478520000
1980	4636140000
1981	4179770000.0000005
1982	4173340000
1983	4570310000
1984	5202050000
1985	5691050000
1986	7240770000
1987	9411990000
1988	10870320000
1989	12668821771
1990	16397812794.000002
1991	17021513835.999998
1992	18797603399
1993	15373067961
1994	18051344843
1995	23169535752
1996	23831406674
1997	23816354423
1998	24179562927
1999	24541661540
2000	24328161221
2001	24088507669
2002	25877714542
2003	31740293363
2004	35727950367
2005	38720430766
2006	44781961239
2007	52493246143
2008	57376753971
2009	44264371006
2010	49404039036
2011	59622232766
2012	58115065298
2013	62797259353
2014	63832602854
2015	55046598891
2016	55372446464
2017	62129639335
2018	68361133470.99999
2019	67062910103.99999
2020	61526463561