Year current international $ 2000 1658.76572030388 2001 1771.76763404691 2002 1861.20192700644 2003 2105.30713351919 2004 2248.40921122813 2005 2296.28395044281 2006 2409.14835850846 2007 2503.58379207039 2008 2764.5783946239 2009 2984.84752540787 2010 3114.90654837131 2011 3243.45637882659 2012 3405.39389666663 2013 3516.49444837354 2014 3637.60087792674 2015 3822.91184986311 2016 4034.33547568215 2017 4188.09530462862 2018 4381.42190578579 2019 4545.03509992311 2020 4766.98750787769 2021 5058.61506042599