Year current international $ 2000 60.7293459742693 2001 64.77693651644066 2002 63.9790531344483 2003 75.72576427893132 2004 75.27451740380096 2005 74.51085392388161 2006 78.62562907291219 2007 81.50324099757539 2008 84.26468109021911 2009 86.71373341644481 2010 84.50665887725556 2011 86.94504651289813 2012 86.67337495070484 2013 92.99285064614952 2014 94.62288511263938 2015 97.2677607020834 2016 99.30595920840105 2017 95.75478047647621 2018 88.92904889332961 2019 88.1572465176034 2020 86.2450088617893 2021 95.74158578134444