Year	constant 2010 US$
1980	273557749620.101
1981	280607349394.606
1982	279335288634.071
1983	280940767098.212
1984	291063310505.858
1985	297362535465.129
1986	305692018621.148
1987	309358713103.491
1988	317788660979.458
1989	325995652134.206
1990	334471327165.8
1991	334721341777.133
1992	333097863986.831
1993	339372412314.565
1994	347039710845.415
1995	358601568871.818
1996	362727776174.619
1997	378249660190.275
1998	393221710524.844
1999	401998071534.834
2000	417520855649.351
2001	407482843556.36
2002	404630806678.255
2003	424900039770.953
2004	434203099935.618
2005	456184010034.748
2006	470767156803.128
2007	450826178268.869
2008	415948179272.669
2009	455299916437.529
2010	497128349311.409
2011	476353643012.601
2012	486745571400.57
2013	490189776533.883
2014	489645003840.292
2015	515050763724.334
2016	506153248544.665
2017	509555078176.626