Year	constant 2011 international $
1990	9296.94200583915
1991	8596.50399033212
1992	8057.39454715674
1993	8001.70074570231
1994	8174.88625789851
1995	8446.23926058442
1996	8549.73832522372
1997	8508.28792137145
1998	9109.05998091288
1999	8390.06511240394
2000	8833.43687448384
2001	9350.77579298186
2002	10123.359412882
2003	10729.9999945868
2004	11507.0417772991
2005	12419.9151254798
2006	13374.9029906954
2007	14463.1673919163
2008	15442.1347998764
2009	14984.5899413924
2010	15283.2747066107
2011	15676.1333354642
2012	15772.0792812583
2013	15938.9336151633
2014	16324.3374794387
2015	16999.1064013733
2016	17792.678144811
2017	18606.213924388
2018	19320.7512338619