Year current international $ 2000 59.00394035188388 2001 65.97371090633648 2002 68.38960747263351 2003 70.28951413253934 2004 75.70116383840606 2005 80.17594226441263 2006 85.14575153097284 2007 90.71719464432901 2008 91.95591393571854 2009 93.04257883626286 2010 94.21168469704922 2011 93.71161499269124 2012 103.40941982375838 2013 127.52189606033942 2014 127.6374956318459 2015 130.12120927199496 2016 134.7734638627077 2017 114.64287688257566 2018 119.55105178088832 2019 127.07597961488128 2020 131.34315983282204 2021 145.17458497153842