Year	constant 2010 US$
1976	4512921122.77442
1977	5168463010.67049
1978	6085051091.73282
1979	7170718539.09032
1980	8301865556.00502
1981	8660984288.30107
1982	8594311639.34138
1983	8645292524.65968
1984	9555925957.43809
1985	9264643964.441
1986	9938071894.21702
1987	10937421397.2851
1988	10732815332.7686
1989	10664161434.7413
1990	9133815910.20291
1991	7707575986.45894
1992	9543403482.40774
1993	10166996013.8509
1994	11144286150.8116
1995	11700051136.3465
1996	11492042560.8885
1997	12077552117.4542
1998	12678779623.3492
1999	13050689030.0509
2000	13918571699.2394
2001	14689932315.5745
2002	15289535025.5903
2003	15439423745.2514
2004	16373766068.7924
2005	17475748804.2284
2006	19294265506.3992
2007	20817074656.2971
2008	24440377168.0763
2009	26143788829.9823
2010	23880742853.2033
2011	23299757608.3409
2012	24186681321.9757
2013	24848440702.1605
2014	25236879072.0098
2015	26864054356.8167
2016	26967184737.869
2017	28077262949.2317