Year	constant 2011 international $
1990	26902.5355529177
1991	27057.3462927232
1992	27415.4001358831
1993	27565.6946233535
1994	28142.6808115119
1995	28651.0661195495
1996	29394.2063895371
1997	30268.9598737363
1998	30918.1192973388
1999	31745.737843402
2000	32861.4431617086
2001	33056.8284258872
2002	33341.7026999704
2003	33837.8615978
2004	34774.8972940126
2005	35543.053058638
2006	36407.0028835804
2007	37081.9943512996
2008	36895.9596031647
2009	35451.0605334091
2010	36373.8601331168
2011	36945.9464932309
2012	37213.3626049023
2013	37554.0772676117
2014	38109.0024483384
2015	38783.6583951658
2016	39217.6072269384
2017	40037.3045829876