Year current international $ 2000 63.6630788605093 2001 67.3012697049233 2002 69.8548220536629 2003 69.1386770174278 2004 71.8846041712468 2005 74.9292613826421 2006 84.7352487639278 2007 93.2990716222902 2008 103.147954633456 2009 103.56713089111 2010 115.392204780678 2011 132.175330521048 2012 153.475406282068 2013 161.617606871722 2014 157.974126447714 2015 154.368771743902 2016 138.090253992731 2017 151.89053506932 2018 209.61627484798 2019 229.461565331112 2020 258.872379620924 2021 325.620104192752