Year	constant 2010 US$
1970	259310729359.907
1971	277150722945.059
1972	293746771520.679
1973	314118901364.687
1974	321758292085.463
1975	305949822710.834
1976	312749803276.851
1977	310666447980.117
1978	319363950536.347
1979	328890749809.745
1980	338978841492.136
1981	335723598882.378
1982	332732568223.809
1983	322657118305.295
1984	319956847156.37
1985	327339610904.819
1986	341035649097.971
1987	358622808332.669
1988	389778324488.37
1989	418486403713.158
1990	437773874163.256
1991	435435156189.782
1992	428960067803.169
1993	405633568164.195
1994	411943050119.468
1995	417419442735.7
1996	420557117246.014
1997	423874304379.574
1998	451043886463.312
1999	486410359054.946
2000	518742819176.246
2001	530542599542.329
2002	525675537799.428
2003	535763629481.819
2004	554408900551.971
2005	570484110204.076
2006	591281001910.48
2007	624005355255.117
2008	629328783071.444
2009	572250158300.266
2010	584159921654.49
2011	596228970624.335
2012	597608182149.762
2013	592794215656.217
2014	592988898104.742
2015	599061979830.427
2016	614996866446.505
2017	644160047581.575
2018	662122665918.744