Year	constant 2010 US$
1968	6387654700.68698
1969	6840135654.53108
1970	5075798080.55444
1971	4016732642.92385
1972	3938444457.28762
1973	4354157875.79224
1974	4326830028.04091
1975	4096419426.22551
1976	4530879196.96511
1977	5180406989.05865
1978	5121837600.06347
1979	5715041725.78417
1980	5213572710.05024
1981	5714913831.88945
1982	5999607281.34579
1983	5808358619.5869
1984	5361868038.21718
1985	5087111127.63859
1986	5453624916.03877
1987	6627004978.4622
1988	6705714224.12778
1989	6850094339.25492
1990	7674737706.85634
1991	7826915074.96092
1992	8122156909.32008
1993	6391734847.66468
1994	5959887264.95748
1995	6131262437.96282
1996	5961986120.76712
1997	5821489940.70777
1998	5957247964.90491
1999	5378345611.95877
2000	4471684721.35679
2001	4464460476.7617
2002	4685752279.74976
2003	5204425332.84649
2004	5693417092.96752
2005	5906522943.1275
2006	6277380404.43712
2007	7012381324.56974
2008	7686229410.86713
2009	7993113213.01652
2010	7629395746.80423
2011	7708208009.56087
2012	8217845099.76708
2013	8861417416.19396
2014	9467362353.8885
2015	10326097882.0522
2016	10791124121.6397
2017	11111401371.5134
2018	11258866552.323