Year current international $ 2000 0.233275227595022 2001 6.91632663882729 2002 5.6668959936663 2003 6.19004372006105 2004 10.4879029386589 2005 13.5834984763301 2006 16.2556348300059 2007 16.9383675941168 2008 16.9635020370469 2009 23.1280212958141 2010 37.6996203163505 2011 24.8999596436807 2012 24.9513574998095 2013 35.646546493416 2014 14.7266126249285 2015 14.0387386002135 2016 20.5188164317016 2017 20.8492516230662 2018 23.8145135868701 2019 35.3264545727169 2020 45.5082199518359 2021 32.9375697630521