Year	constant 2011 international $
1990	8789.71453035858
1991	8593.74052863543
1992	6551.53852457172
1993	4962.17464309536
1994	3931.12724098744
1995	3427.55108529804
1996	3437.22267606738
1997	3601.66912676867
1998	3924.41064257799
1999	4177.98970781258
2000	4603.76986629071
2001	5020.4949277868
2002	5453.5302441996
2003	5964.8783790501
2004	6460.05502508542
2005	8182.31181443141
2006	10882.2346703891
2007	13499.2683468612
2008	14618.8154247387
2009	15660.0023600548
2010	16215.8471997646
2011	15754.1523626148
2012	15888.6748721826
2013	16600.8799688925
2014	16853.5684691467
2015	16828.9901596414
2016	16131.9721279442
2017	15929.3996305909
2018	16010.989036316