Year current international $ 2000 294.713236309789 2001 313.951658204946 2002 325.55734235535 2003 336.266876298075 2004 357.176237646115 2005 374.103455596731 2006 412.3032186455 2007 448.494151158005 2008 450.066278972089 2009 441.576933654137 2010 451.433834284511 2011 461.470532941274 2012 470.442581359951 2013 459.341104452785 2014 450.601108224866 2015 485.80744100908 2016 449.408913858751 2017 449.027896494254 2018 499.074320774839 2019 522.267127561023 2020 516.466535884012 2021 576.07866645372