Year constant 2011 international $ 1990 7729.00182436699 1991 7730.56364867011 1992 7888.05346157035 1993 8154.44608601786 1994 8467.48336684357 1995 8745.97388943702 1996 8768.10582453562 1997 8913.23821338556 1998 8814.36609909555 1999 8306.28933707 2000 8413.2218436793 2001 8421.36245388365 2002 8501.42568638423 2003 8704.94467810473 2004 9040.15406981243 2005 9338.73044551389 2006 9844.15453620046 2007 10389.2962796667 2008 10602.2454204915 2009 10611.3385223243 2010 10956.9458516118 2011 11650.1994926942 2012 11996.2165178573 2013 12430.6471458766 2014 12887.5992823361 2015 13114.5736261796 2016 13207.4682670432 2017 13186.2068323642 2018 13332.873872033