Year	constant 2010 US$
1971	7750774720.95079
1972	8809493796.89033
1973	9596149748.02471
1974	10147631739.882
1975	11226053093.3696
1976	10938489969.817
1977	11423897991.2445
1978	11539977524.7318
1979	11773023581.7956
1980	12440382945.2026
1981	12849568359.643
1982	13142800762.7323
1983	13272352697.3227
1984	12545748992.7551
1985	13965327939.5848
1986	15549654595.572
1987	16308343896.2668
1988	17521291163.6299
1989	18070621940.5068
1990	16818840175.1884
1991	22598637545.6452
1992	20025347930.9119
1993	21062812847.2115
1994	22017010802.1064
1995	23312189266.7228
1996	25097680183.5188
1997	27641693347.5398
1998	29443017801.7993
1999	30230670561.1831
2000	31284249977.5608
2001	32220488238.1848
2002	33197873979.5441
2003	31677397316.7893
2004	32703106310.521
2005	36506456436.9663
2006	40032589348.7739
2007	42243041183.3415
2008	44132159410.0027
2009	46625735067.9555
2010	49678273713.7215
2011	50510403698.2282
2012	51958244876.8473
2013	53160064342.95
2014	56676422648.5896
2015	62508137066.5088
2016	66634805703.8359
2017	69249969036.6259