Year constant 2011 international $ 1990 32305.187524083 1991 32833.3950083123 1992 33142.0338508129 1993 33325.7234672959 1994 34106.2679347939 1995 34995.750333104 1996 36053.4280862606 1997 37421.0722254173 1998 38925.5875268037 1999 40613.9359968284 2000 42016.5538010419 2001 42670.9440506884 2002 42491.5691516157 2003 42357.3851601757 2004 43048.3137690503 2005 43828.650190738 2006 45272.7822529675 2007 46878.770587095 2008 47710.0983589935 2009 45724.8627669983 2010 46101.7545025257 2011 46599.02103045 2012 45948.5362831563 2013 45753.6324046841 2014 46238.2097020059 2015 46935.6049728766 2016 47709.7212052938 2017 48809.0890538654 2018 49787.0727518688