Year	constant 2010 US$
1971	7600876012.50891
1972	8560770981.42553
1973	8275804113.39587
1974	8664299915.91617
1975	8288453304.69495
1976	8579784219.39801
1977	10016416803.283
1978	10299383168.5875
1979	10948705635.0125
1980	11019299817.5177
1981	10818324007.2198
1982	10279174054.4289
1983	10760896679.6446
1984	11423440371.7995
1985	11463091827.2493
1986	12755455955.1398
1987	13239717711.0257
1988	14015824461.8723
1989	13977756089.0537
1990	14444141511.6468
1991	15067271822.7173
1992	15106760799.1667
1993	15522942055.0924
1994	16928623538.714
1995	17319477096.7406
1996	18348378623.7744
1997	19046189414.159
1998	19843488593.7918
1999	20377910301.3827
2000	20406246708.8866
2001	20817677681.7553
2002	20933819640.6324
2003	21044690619.1325
2004	22271118491.6008
2005	24129492475.5867
2006	27604775571.1808
2007	28965320042.6343
2008	29610981870.9094
2009	31385193768.0224
2010	33542801699.1503
2011	35113493079.9484
2012	37437607060.6296
2013	39480287526.7943
2014	40177299596.6798
2015	43664512338.8724
2016	48709103161.4551
2017	49624206244.553