Year	constant 2011 international $
1990	26974.3403708451
1991	28276.9638085517
1992	29788.864405076
1993	31097.314281584
1994	32240.0640962326
1995	32358.238098237
1996	32271.5262119415
1997	33636.0770968448
1998	31394.2155658076
1999	31875.2447610649
2000	34016.7839136708
2001	33956.3921330841
2002	34366.3867347835
2003	35486.7035409767
2004	38274.4005311417
2005	40923.0093636764
2006	43520.53619672
2007	45937.453545706
2008	46635.1305285336
2009	45390.4560118236
2010	48107.7132413653
2011	50085.9593288483
2012	50378.3228610495
2013	51732.4408075901
2014	52789.4122154301
2015	53591.8027609189
2016	54420.0651139826
2017	56087.6934334098
2018	57322.4577705854