Year constant 2011 international $ 1990 8141.91455401634 1991 7797.40883728046 1992 7969.51228242843 1993 8005.22655088188 1994 7942.79656668548 1995 7990.9697404769 1996 8297.09329219358 1997 8419.61897080291 1998 8825.68803303313 1999 9054.07256618105 2000 9314.28219287574 2001 9366.81561285318 2002 9517.34706973784 2003 9594.93944212341 2004 10174.3008694144 2005 10449.5175323512 2006 10845.0442512393 2007 11309.2277869253 2008 11519.0092247898 2009 11610.5195611407 2010 12006.0478978374 2011 11720.1814697065 2012 11798.5264536035 2013 11791.8146790725 2014 11844.9618121645 2015 11767.7770805582 2016 12427.0160488558 2017 12588.3498914883