Year	constant 2010 US$
1970	46176498666.0783
1971	50007985530.7939
1972	53659891842.0155
1973	62610662173.4566
1974	64701329722.7181
1975	67605614907.829
1976	65254571319.6799
1977	63254630988.4393
1978	67759014462.5198
1979	70604064803.8567
1980	68918437914.1342
1981	74167166001.3774
1982	77257703809.199
1983	81101872465.0472
1984	78476107195.1537
1985	78159710187.9526
1986	82645528279.8093
1987	91735010557.7063
1988	93672641566.2046
1989	91270672657.6134
1990	99918940886.2054
1991	112737857514.426
1992	119327401841.414
1993	126951743352.122
1994	135808631590.209
1995	143985736384.972
1996	151840532766.333
1997	156166490629.116
1998	160891144123.724
1999	167545079787.91
2000	176460792168.977
2001	180726465755.989
2002	181105265320.041
2003	177982470623.633
2004	183459491866.086
2005	190097366470.757
2006	199757563877.801
2007	212361520577.164
2008	216304569995.788
2009	217389881130.524
2010	228749743927.146
2011	241569812047.419
2012	250562436336.162
2013	258212743572.771
2014	268903807139.657
2015	278811240112.598
2016	297330803656.082
2017	307455765256.521