Year current international $ 2000 177.711674139939 2001 180.632545724269 2002 189.268442805742 2003 190.596100690882 2004 195.331027403166 2005 191.160082242958 2006 197.950340073289 2007 189.658991436882 2008 197.816393865439 2009 193.975473389487 2010 203.086632824735 2011 209.032217205814 2012 198.673777968594 2013 195.522349148657 2014 198.470494129775 2015 206.286417331909 2016 214.657133501235 2017 210.073493492153 2018 213.61710460743 2019 224.331284232509 2020 215.361757946146 2021 237.432862975229