Year current international $ 2000 170.74602366285185 2001 181.9775560373578 2002 189.81927349163794 2003 204.2783482715465 2004 218.96845315345396 2005 236.79880627122114 2006 256.60706277490465 2007 277.22657680921077 2008 297.63721971313964 2009 328.3711348409284 2010 339.2874848318982 2011 361.69341669343913 2012 386.5509513964051 2013 414.9330103415444 2014 432.092776723114 2015 449.9428091236687 2016 466.239765120461 2017 479.78345461921 2018 504.2510631237862 2019 534.1277025035536 2020 560.9867184544034 2021 608.947683285565