Year	constant 2010 US$
1960	28967631952.4875
1961	30539535228.1828
1962	31750591409.4456
1963	33611263976.742
1964	34440992953.7731
1965	34655353326.4197
1966	38368010328.2141
1967	39596960613.048
1968	41023896079.0493
1969	42711857107.0538
1970	43749117385.6145
1971	48366227527.3436
1972	48129039109.6605
1973	45640116113.5417
1974	46566567471.9628
1975	39682176978.7478
1976	41393202491.4016
1977	45960444449.0233
1978	49331053986.4579
1979	53463400873.1806
1980	57726949576.6913
1981	61004711935.4851
1982	52764300804.4953
1983	49571730536.1885
1984	51104668146.092
1985	52385889700.3795
1986	55963626247.5841
1987	60738184010.3988
1988	65187346780.0565
1989	72289790116.2609
1990	75643833604.541
1991	81628404076.8116
1992	91523903351.3389
1993	98162512982.0312
1994	102085338734.074
1995	111686008747.529
1996	119899008329.204
1997	128976258794.955
1998	135540162229.368
1999	134237768837.24
2000	140555985561.927
2001	145475669614.95
2002	149280257962.308
2003	152227759092.649
2004	159318850278.715
2005	167171032162.599
2006	169278841925.365
2007	179502938760.32
2008	194575520457.051
2009	193301571873.656
2010	203115009358.564
2011	217955946582.239
2012	233135235577.339
2013	243717719578.698
2014	250311028376.23
2015	257481559491.633
2016	262394904613.154
2017	261743256212.79
2018	272320135800.949