Year	constant 2011 international $
1990	23593.9586440964
1991	24143.7623558523
1992	24217.1953479338
1993	23974.8138184159
1994	23991.4926170893
1995	24981.8726421163
1996	25463.4704156191
1997	26306.9158361276
1998	27307.5530768871
1999	28421.6977324003
2000	29853.0048611373
2001	30623.669691634
2002	31044.4151113631
2003	31553.7732539302
2004	31960.9165507602
2005	32421.8487984004
2006	33110.0656654868
2007	33494.2951491093
2008	33247.9310126544
2009	32043.8633408624
2010	32045.386929799
2011	31512.2845700532
2012	30887.7703134908
2013	30516.025675052
2014	31088.1546706821
2015	32264.7129902401
2016	33379.2937028721
2017	34225.8168621165