Year current international $ 1990 6733.772432077051 1991 6892.3766934552 1992 7498.242599940482 1993 7607.732302966532 1994 7791.299845649764 1995 7998.787385473197 1996 8295.017824009954 1997 8299.443502391156 1998 8840.649210354108 1999 9123.701563510662 2000 9262.113111749737 2001 9085.58336543218 2002 9196.195114696073 2003 9702.841175777461 2004 10610.296689548766 2005 10822.496824840082 2006 11770.256494311197 2007 12216.735770732486 2008 12986.393478312657 2009 12613.648079826755 2010 12715.628958801566 2011 13444.34679635923 2012 13401.727122894054 2013 13959.510798554693 2014 14348.207792941295 2015 14294.542165127872 2016 15240.175955841942 2017 16056.218757691526 2018 17347.941676426723 2019 18584.32943815868 2020 14815.719503805269 2021 18651.8731999561 2022 23546.933814778444 2023 25128.69967851152