Year	constant 2010 US$
1990	8211274158.92332
1991	11092905093.2007
1992	17006229880.7297
1993	19493726485.1078
1994	20041066175.058
1995	20998582018.2421
1996	22152628184.942
1997	22016541761.9901
1998	22558700487.8275
1999	22816305809.4196
2000	23106341276.0199
2001	24308001980.1658
2002	25004964676.7496
2003	25807973023.4163
2004	26805380081.7247
2005	26135265369.0879
2006	26991298675.4892
2007	28913747295.058
2008	31446169217.5124
2009	35563546400
2010	38125068286.3682
2011	37748976978.0431
2012	40043213266.9983
2013	40279921724.7098
2014	43245274295.1907
2015	44262555223.8806
2016	46995660364.8424
2017	49041176119.403
2018	48476917412.9353