Year constant 2011 international $ 1990 11364.2607968025 1991 12480.8510419382 1992 12594.1733068327 1993 12524.1464836355 1994 12158.3626177656 1995 12263.4432724508 1996 12721.4104196796 1997 12612.3832791824 1998 12718.7432540381 1999 12663.4348576641 2000 13237.2454314066 2001 13174.5469132978 2002 13956.2325807825 2003 14988.5447012211 2004 15456.2788721584 2005 15763.8752333278 2006 16366.1378656777 2007 17506.9538320366 2008 17360.0498778945 2009 17341.5529567779 2010 18138.6482389898 2011 18400.9062905794 2012 16827.022340846 2013 16587.4977361131 2014 17130.7320329716 2015 16683.4316065827 2016 18663.5367196606 2017 19097.9667811982