Year current international $ 2002 0.779073631242383 2003 6.2801357504381 2004 5.20055203652206 2005 5.63248509233956 2006 5.54447835911954 2007 6.34690247202162 2008 8.42882728649552 2009 8.31800067398073 2010 8.14411166439537 2011 8.26016553119813 2012 6.74656734166901 2013 8.9658546677278 2014 10.0326952923805 2015 11.1578256092955 2016 12.1456348317743 2017 13.4806822939283 2018 11.6551511053751 2019 10.7747028656993 2020 24.6274107781042 2021 12.0090641345172