Year	constant 2010 US$
1970	15656.4729016411
1971	17401.3188157865
1972	18055.461814736
1973	19008.827909677
1974	19890.5550639839
1975	19978.734734742
1976	21126.7150112384
1977	23130.1993274424
1978	24621.5604407947
1979	25610.1031611625
1980	27499.3834842896
1981	27248.0986152271
1982	25790.9724005255
1983	26375.3367208026
1984	24724.4610195573
1985	25387.6140366334
1986	27036.990708914
1987	28211.9211584797
1988	29412.2423364339
1989	31087.3204227791
1990	27295.9523444254
1991	27314.107194088
1992	26011.6275626403
1993	24748.533678432
1994	26073.0270997514
1995	26899.8018575843
1996	27262.4139043324
1997	27613.480696594
1998	29702.688972125
1999	30111.9577032899
2000	32193.0025213682
2001	32514.7598494986
2002	32051.665664368
2003	33379.583469
2004	35593.4254981198
2005	37352.8925366913
2006	39539.9157055674
2007	40626.7814272793
2008	43305.7027608534
2009	43684.587199796
2010	43988.3324931946
2011	43781.4625641366
2012	44454.3735497748
2013	44131.2517597431
2014	46362.5906665085
2015	45335.6130300796
2016	47974.0731748846
2017	48460.7514117986