Year	constant 2010 US$
1970	45304414538.3022
1971	47145461877.7178
1972	50771593530.9188
1973	55352762891.6095
1974	56577798695.8518
1975	54920817880.7323
1976	57926525678.6841
1977	62484596547.0876
1978	68191299159.4879
1979	73086914566.5687
1980	71516992409.1181
1981	73672843919.2967
1982	72072220410.9678
1983	70461553394.6597
1984	71189571903.4271
1985	71973912621.737
1986	72820579960.3044
1987	72462015481.0817
1988	73810849212.5251
1989	79024563296.204
1990	84203988163.1523
1991	84226945471.7925
1992	83878607006.239
1993	84750172332.6024
1994	89564988444.4369
1995	96207243699.2837
1996	104240608579.103
1997	113927888496.31
1998	124912197679.682
1999	135759839635.853
2000	148195064287.386
2001	156144315764.642
2002	163789060868.61
2003	171329984471.893
2004	178633123822.031
2005	195669741265.933
2006	209332271520.342
2007	218284333092.553
2008	210547711736.957
2009	193051417290.93
2010	185746393152.349
2011	184588685127.553
2012	189645575170.904
2013	186865878419.779
2014	202711308640.152
2015	235734452407.009
2016	284029077785.143
2017	282537569766.935
2018	259128712912.227