Year constant 2011 international $ 1993 1637.61319161292 1994 1031.66142452653 1995 1097.84247257518 1996 1127.99686729723 1997 1140.4124469576 1998 1162.73316392607 1999 1278.93731717845 2000 1384.62730948334 2001 1457.73321305255 2002 1525.07613888533 2003 1626.6812523053 2004 1765.99979946615 2005 1968.82338524648 2006 2147.81942367899 2007 2332.16941111233 2008 2451.69086995636 2009 2417.29366897444 2010 2522.31478784906 2011 2658.06255249593 2012 2806.32564560971 2013 2963.47911908321 2014 3123.55981881129 2015 3290.14654193512 2016 3466.78569025859 2017 3653.64149490717 2018 3870.29840220303