Year	constant 2011 international $
1990	5115.84347903983
1991	5595.63527158851
1992	6167.30946927722
1993	6444.96901681164
1994	6325.2910009307
1995	6203.53946964287
1996	6094.80294100482
1997	6085.38722039776
1998	6075.46334345497
1999	6367.02700651484
2000	6953.70092605265
2001	7080.64397207706
2002	7235.65216804674
2003	7703.6832393595
2004	7855.36166996352
2005	7850.7197955052
2006	7998.22161434708
2007	7878.52293543016
2008	7926.20870869142
2009	7780.76510810542
2010	7849.22569954496
2011	7830.22586722299
2012	7875.13949348159
2013	7764.99116446074
2014	7877.36983596804
2015	7976.89948044313
2016	7769.26253219143
2017	7726.38069703329
2018	7810.23806031465