Year constant 2011 international $ 1990 2463.78264624481 1991 2416.32147603903 1992 2377.59217399544 1993 2303.86137956984 1994 2280.33319254864 1995 2284.23939716591 1996 2335.08347077029 1997 2358.3406195452 1998 2357.32624232509 1999 2344.08815811764 2000 2322.34762615534 2001 2378.88347410613 2002 2498.42674563233 2003 2548.67211576301 2004 2634.74263747091 2005 2717.86600023796 2006 2862.75641744747 2007 2943.59439375385 2008 3015.34002467795 2009 3055.08357640963 2010 3117.69100555968 2011 3192.05961089231 2012 3249.65999861321 2013 3292.90286284288 2014 3433.57259819081 2015 3476.26398660946 2016 3439.01180557996 2017 3432.98795436239