Year	constant 2010 US$
1981	91610949634.408
1982	86047166197.7396
1983	74916923730.8783
1984	75118019942.2398
1985	79121387445.0099
1986	78789333258.7615
1987	85779101001.7309
1988	91515477135.1957
1989	85825123673.4036
1990	86488096584.3393
1991	86838343776.4411
1992	89244077335.303
1993	81395291918.0079
1994	77428145065.8986
1995	75942872461.8702
1996	79013120760.3414
1997	79211691236.8671
1998	79516494205.7337
1999	82861105131.6126
2000	84029302191.5842
2001	87368306754.3692
2002	94535939151.1655
2003	95191649915.8048
2004	100290156201.805
2005	107397456208.027
2006	113766764422.408
2007	120781553321.997
2008	126566375987.686
2009	128735360434.989
2010	136691763174.855
2011	147827993631.82
2012	158309149563.863
2013	174229303418.59
2014	188275258499.292
2015	196691205240.096
2016	204500291482.473
2017	215793314190.562
2018	228121268411.267