Year current international $ 2000 308.756595189503 2001 307.871654382888 2002 247.706439796633 2003 238.982572073513 2004 242.913211228596 2005 340.104609642653 2006 368.886831808987 2007 404.694287335445 2008 429.304165118189 2009 402.383962730177 2010 453.462631184131 2011 486.343857947706 2012 500.912549194394 2013 525.746319102402 2014 512.936330472054 2015 531.790216102312 2016 539.578063353836 2017 513.828236161825 2018 603.513608915853 2019 561.712248756673 2020 475.903287592652 2021 519.586103583686