Year	constant 2011 international $
1990	5891.73481439941
1991	5679.43162617164
1992	5952.47887700925
1993	5994.76661145984
1994	6212.88956730193
1995	6287.59738646127
1996	6514.12332504896
1997	6303.70789575075
1998	6326.43290112427
1999	6830.69237411608
2000	6675.63310495267
2001	6784.72591844772
2002	6990.39729674363
2003	7053.2155644064
2004	7410.83539824562
2005	7428.70414810236
2006	7509.05151598259
2007	7371.09681336979
2008	7366.43296218994
2009	7193.90383793292
2010	7353.21705896177
2011	7520.37365528929
2012	7612.22768101595
2013	7967.64290523154
2014	8405.90515090403
2015	8775.92092543117
2016	8969.12117050288
2017	9379.29779405208
2018	9781.11262607732