Year constant 2011 international $ 1990 14619.4541903449 1991 15671.7999049053 1992 16248.5550620926 1993 15937.2940148975 1994 15231.1834003418 1995 15503.4745713288 1996 15158.6101189769 1997 15805.1591341379 1998 15544.778403732 1999 14338.8314532754 2000 14589.3472276867 2001 14806.6635678272 2002 13251.3752905602 2003 12007.8332714062 2004 13960.5419757979 2005 15147.0270428253 2006 16383.4349961259 2007 17557.6963210351 2008 18224.7016733976 2009 17392.3900796089 2010 16887.0959222895 2011 17319.2896120743 2012 17998.2996740348 2013 17982.1305222454 2014 17131.3869071201