Year current international $ 2000 32.3572555532484 2001 34.4946586570063 2002 34.3691377928284 2003 36.5060916331396 2004 43.1868890409288 2005 41.5132937693988 2006 55.6043707425787 2007 64.7551430307003 2008 61.132220342396 2009 86.5067681188785 2010 82.9034327275479 2011 93.5564195117635 2012 102.898380268077 2013 114.450994921141 2014 125.140699721653 2015 134.180842638546 2016 129.910035188777 2017 128.48729604237 2018 183.445514824152 2019 175.592053310631 2020 161.934295422091 2021 170.779293127013