Year	constant 2011 international $
1990	5179.31927526604
1991	5128.53672600235
1992	5018.41004175105
1993	5115.00658197753
1994	5208.98759374536
1995	5404.39897084687
1996	5592.35119054114
1997	5813.80259332869
1998	5873.68808305291
1999	6087.99932641213
2000	6467.89847946193
2001	6747.53730916053
2002	7096.52955857983
2003	7535.36953661948
2004	8092.3712225887
2005	8651.57758812102
2006	9389.97411670985
2007	10267.7728154279
2008	10900.0857265449
2009	11154.7971622709
2010	11950.8103953414
2011	12701.6439187517
2012	13350.713506951
2013	13990.0573348222
2014	14576.2198809523
2015	15085.3362397211
2016	15619.7524113391
2017	16286.7904032263
2018	17013.8075025483