Year	constant 2010 US$
1971	15634674501.0785
1972	17365629818.3719
1973	18559309786.8984
1974	19228472135.9566
1975	20730148594.5731
1976	21393558581.7332
1977	22641059427.8116
1978	24485597550.7418
1979	26335678860.8496
1980	27141202263.7821
1981	28899760918.3966
1982	31000603001.0766
1983	34851161515.5261
1984	38097781620.9747
1985	37849534619.582
1986	38015572809.2167
1987	40289470832.187
1988	45901102354.5467
1989	50803450801.328
1990	56655057288.1757
1991	61154105003.7314
1992	65032371140.3062
1993	70600931027.1845
1994	81197920758.2361
1995	90211301137.1672
1996	95396379313.606
1997	105802973927.737
1998	100282766785.377
1999	103873073415.894
2000	117279729675.763
2001	112710423617.157
2002	115671386637.457
2003	118305659645.522
2004	127818861609.989
2005	140650713973.983
2006	159528730780.708
2007	176363174160.458
2008	164605968448.366
2009	163407147362.594
2010	203575258173.29
2011	209605492165.569
2012	210492431487.343
2013	218063228820.929
2014	226898708529.956
2015	235525010407.393
2016	237163494730.745
2017	250206958328.768