Year	constant 2011 international $
1990	24037.7673716784
1991	22651.1034365616
1992	22661.7659887771
1993	23836.8725458912
1994	24726.0765766965
1995	25517.282779728
1996	26026.1028233915
1997	26211.7467884321
1998	26185.950866294
1999	27469.8944843065
2000	28101.8321567534
2001	28905.9486896676
2002	29737.7299566893
2003	30487.0353586935
2004	31248.9519466014
2005	31924.4592287137
2006	32434.5928487733
2007	33101.7962610425
2008	32490.9099724671
2009	32098.9656740619
2010	32232.7088891444
2011	32734.5366666969
2012	33280.2459032327
2013	33876.0522162017
2014	34608.0616874788
2015	35177.8173120469
2016	35702.876009987
2017	36046.3943167607
2018	36354.2303902127