Year	constant 2011 international $
1990	28287.7076395473
1991	28867.9039479854
1992	29108.365120293
1993	28813.9640317647
1994	29302.8156240659
1995	29997.5032272769
1996	30486.7988924667
1997	31254.0697787187
1998	32043.0327262772
1999	32955.5522728923
2000	34098.1569801923
2001	34624.3446615837
2002	34704.2307841453
2003	34840.4394861111
2004	35634.7364442263
2005	36060.9409322171
2006	37199.3398175655
2007	38041.4997684641
2008	37882.057052617
2009	36256.0121718377
2010	36965.8103702186
2011	37638.0891883407
2012	37271.006320301
2013	37055.0229717983
2014	37378.1847768697
2015	37883.4014597302
2016	38569.7450945038
2017	39537.0668307648