Year	constant 2011 international $
1990	9846.18423724054
1991	10026.1399627278
1992	10106.3895278974
1993	10320.2744614494
1994	10625.9942648408
1995	10527.918475902
1996	10730.1705783909
1997	11110.1986250482
1998	11189.2452225748
1999	11023.2945958988
2000	11256.3855777235
2001	11149.2435747605
2002	11002.887139956
2003	11044.4359530179
2004	11557.039723442
2005	11894.046969675
2006	12373.6704945786
2007	12901.025232374
2008	13244.4971080907
2009	12811.1478662994
2010	13439.3602769888
2011	13887.0308645758
2012	14106.3053443865
2013	14340.4379961413
2014	14360.0796004946
2015	14274.7169049893
2016	14126.4491300793
2017	14250.1246952014
2018	14324.5363928188