Year	constant 2010 US$
1970	103634328453.906
1971	119540605276.461
1972	139521447964.617
1973	168807936593.111
1974	191189541323.371
1975	209800589555.656
1976	224543691911.238
1977	221915101900.227
1978	232450936318.536
1979	241483245159.459
1980	263630887627.73
1981	230966080817.453
1982	215437983089.891
1983	180755988384.866
1984	182987477949.636
1985	199073253791.916
1986	244820367228.762
1987	242030696597.987
1988	230315067841.933
1989	233104494556.719
1990	214229307118.965
1991	231547200147.794
1992	216216303206.003
1993	229893582764.893
1994	262668979195.089
1995	281817558549.341
1996	284067766086.858
1997	307980915586.63
1998	307476317189.632
1999	280186864313.324
2000	293672794906.776
2001	297503684629.377
2002	293208401375.625
2003	281525476352.888
2004	305418440484.311
2005	311393344247.385
2006	332134595782.174
2007	371832677467.03
2008	417519602091.86
2009	408610256423.374
2010	481563210550.25
2011	514473463847.203
2012	518480064859.027
2013	548692940882.219
2014	525515774329.241
2015	452224715779.9
2016	397370642678.49
2017	387460388813.097
2018	403465357605.73