Year	constant 2010 US$
1970	4816367207.99443
1971	5231483495.7532
1972	5483212031.21027
1973	5667859156.02376
1974	5719501664.42704
1975	6276246978.81375
1976	6622050214.63675
1977	7181092419.72367
1978	7630430070.09061
1979	7704815956.77299
1980	7461847572.60985
1981	8868368496.75097
1982	9480000609.33834
1983	9924810954.6248
1984	10812123377.6776
1985	12228143500.2539
1986	10781105482.1603
1987	9692466958.68867
1988	10646705643.7926
1989	11724144245.7972
1990	11298320809.0237
1991	8977011916.69512
1992	5272504875.38409
1993	3751098882.89519
1994	2714204415.15876
1995	2844572103.78969
1996	3899283031.75145
1997	4195960396.0396
1998	3736453397.06384
1999	3753488562.64937
2000	4179367702.28747
2001	4212442471.83339
2002	3758355752.81666
2003	3396192557.18675
2004	3853929668.82895
2005	5125372482.07579
2006	6456770228.74701
2007	6610529190.85012
2008	8060509388.86992
2009	6526459542.50597
2010	6480000000
2011	7033089791.73779
2012	7536401502.21919
2013	7839494708.0915
2014	7457862751.79242
2015	8819569819.05087
2016	9482171389.55275
2017	9601638784.56812