Year	constant 2010 US$
1973	29950968649.2847
1974	30204501717.014
1975	30766271504.0196
1976	35894080718.1995
1977	41409608259.2501
1978	47630208422.5209
1979	52072531786.997
1980	58338169102.0237
1981	63917957353.4979
1982	64556726995.6261
1983	66811062075.2044
1984	71141293868.2516
1985	72335775312.1748
1986	78816769600.8986
1987	87629083418.4112
1988	95605791679.9965
1989	97287124810.3159
1990	104111494775.781
1991	113257266784.882
1992	123984437729.118
1993	130761417549.197
1994	144541552652.8
1995	152461208796.501
1996	155219737446.322
1997	167003677576.321
1998	153532081797.274
1999	148933042432.788
2000	160516098891.344
2001	161148646894.089
2002	160771377064.238
2003	160706629699.944
2004	169188825569.859
2005	172186681772.789
2006	182652678870.118
2007	197088876191.798
2008	199780337578.192
2009	201024753301.361
2010	215206070123.05
2011	228663638151.533
2012	237459014263.933
2013	248852407112.834
2014	255978924854.737
2015	260044099145.862
2016	266893133558.69
2017	280760615513.122
2018	293384682666.74