Year	constant 2011 international $
1990	9633.1244999867
1991	9051.95480333256
1992	8477.42245349861
1993	7862.53028258668
1994	7733.35633322243
1995	7641.17773477922
1996	7707.67304401043
1997	7778.95485937564
1998	7991.98907522641
1999	8287.9458732325
2000	8620.58246385861
2001	8323.34930248534
2002	8422.57989095746
2003	8590.92069180708
2004	8976.66477957542
2005	9385.98330078869
2006	9854.47355010484
2007	10480.7429585583
2008	11044.1592717006
2009	10995.3732366072
2010	11355.3394804946
2011	11611.2511511122
2012	11548.3329934947
2013	11875.847608953
2014	12296.7816006381
2015	12761.3593030373
2016	13115.9210435266
2017	13139.5677273982
2018	13483.4534646178