Year	constant 2010 US$
1975	199923107.214921
1976	240827467.030819
1977	273314300.696149
1978	279069424.01882
1979	297652543.246528
1980	347673660.305601
1981	396753515.544956
1982	443493668.389267
1983	492950032.678486
1984	562307265.45511
1985	632094794.288722
1986	730631013.817296
1987	939697782.583896
1988	1102454651.3434
1989	1199511760.59091
1990	1285254970.62044
1991	1324328411.20551
1992	1469225897.44103
1993	1615023781.20118
1994	1696354468.53704
1995	1767818362.69432
1996	1788693512.90779
1997	1966002630.40414
1998	2096331854.97703
1999	2137866056.54046
2000	2151048087.21356
2001	2120037900.30226
2002	2230313150.34295
2003	2257523562.88802
2004	2419237516.92242
2005	2266293567.89483
2006	2176233653.4077
2007	2252859717.21611
2008	2365187906.45999
2009	2435268616.6217
2010	2526196081.60622
2011	2652202161.97537
2012	3056134957.18308
2013	3495934977.35797
2014	3873075100.73363
2015	3969779342.14693
2016	4060973062.54116
2017	4123620123.0679
2018	4263479307.52085