Year	constant 2011 international $
1990	30728.7923646333
1991	31124.3144815395
1992	31314.5888073436
1993	31103.6996372177
1994	31717.1422000913
1995	32742.0650734796
1996	33236.9507138785
1997	34006.9141228023
1998	34512.8012197442
1999	35173.7596487449
2000	36393.9342436385
2001	37046.1680902113
2002	37029.685902293
2003	36906.6846005166
2004	37369.6063471647
2005	37660.848071072
2006	38391.6452749442
2007	38641.9133388546
2008	37607.660591958
2009	35687.5591203575
2010	36128.2248391124
2011	36251.4765490608
2012	35178.1939704244
2013	34161.2286554536
2014	33946.411175229
2015	34056.4436188067
2016	34821.8980770402
2017	35541.9214953507
2018	36073.7910947555