Year	constant 2010 US$
1970	237543228952.565
1971	246748077858.162
1972	253502152812.985
1973	263928989624.823
1974	272268759572.831
1975	281538192050.401
1976	296383900336.324
1977	308585084087.996
1978	321595261129.921
1979	329025763228.127
1980	337145533294.589
1981	334312220265.527
1982	332964022390.265
1983	339078675945.438
1984	339772039298.998
1985	347194501478.541
1986	354295394989.412
1987	363729602159.763
1988	368967602612.024
1989	378628294973.157
1990	391748829153.131
1991	402206583991.689
1992	407418487057.366
1993	412518210841.827
1994	420696957529.327
1995	431691991637.06
1996	444619988936.129
1997	461870327959.884
1998	485598378260.446
1999	509136522649.284
2000	527257959345.128
2001	541793484642.1
2002	553244460874.992
2003	557456756833.819
2004	559532009699.057
2005	565157278219.569
2006	579300136564.437
2007	592546431733.542
2008	602415349313.035
2009	604496617316.825
2010	606921480359.979
2011	606265890254.125
2012	599312153279.706
2013	595677369029.089
2014	598302936546.329
2015	605684000395.988
2016	612962186794.715
2017	623393768489.61
2018	636249099784.019