Year	constant 2010 US$
1976	2180096679.81053
1977	2322841105.38841
1978	2411824643.8093
1979	2496637078.38749
1980	2245443968.23444
1981	2377528906.6403
1982	2508223475.82068
1983	2517849919.90031
1984	2636148221.16399
1985	2819478502.3399
1986	3094153037.52281
1987	3369255416.36869
1988	3598073234.54336
1989	3758732551.56651
1990	4028862765.98526
1991	4207560807.59126
1992	4481586561.56374
1993	4709343610.80698
1994	4904128792.36779
1995	5114404918.5141
1996	5400189880.68275
1997	5707324462.80375
1998	6053869787.87589
1999	6211932230.85749
2000	6721484098.73106
2001	6946488513.23619
2002	7058668652.66862
2003	7476926216.40681
2004	7800678604.52835
2005	7939339024.58609
2006	8325631106.21805
2007	8802441344.0254
2008	9276625563.38438
2009	9584152842.84979
2010	10003670690.3497
2011	10411574171.7639
2012	10775575127.9264
2013	11137678211.6388
2014	11554737012.1227
2015	11965285103.3245
2016	12424504687.4602
2017	12898394194.9607
2018	13385156234.0467