Year	constant 2011 international $
1990	9527.65517438211
1991	9762.95159555314
1992	9860.94151193159
1993	10070.8263369268
1994	10321.911102978
1995	10273.4028077099
1996	10437.6776035167
1997	10810.3146009032
1998	10845.5203624806
1999	10664.567576116
2000	10978.8029604308
2001	10868.4919032163
2002	10684.6728072543
2003	10722.5105601571
2004	11146.214255104
2005	11471.2205476707
2006	12075.4724243666
2007	12634.9715917782
2008	12965.5672945724
2009	12521.2642553213
2010	13088.4807625593
2011	13507.5406059448
2012	13752.3700738367
2013	14006.1560777255
2014	14038.4395752606
2015	13972.3180147908
2016	13819.0089425082
2017	13937.6348726311
2018	13983.3331668355