Year constant 2011 international $ 2002 511163495.220337 2003 523510439.549331 2004 545734939.341519 2005 539561467.177022 2006 528449217.280928 2007 518571661.817733 2008 506224717.488739 2009 491408384.293947 2010 470418578.934658 2011 449428773.575369 2012 440785912.545073 2013 455602245.739865 2014 459306329.038564 2015 458071634.605664 2016 463010412.337262 2017 461775717.904362