Year constant 2011 international $ 2001 344596773094.269 2002 339185052155.957 2003 365752037186.009 2004 402839814946.959 2005 427503729006.041 2006 472785764425.145 2007 494045898166.207 2008 498861551157.251 2009 470954256987.304 2010 473175538934.582 2011 506316326003.741 2012 529302143040.17 2013 558082199237.381 2014 581065553972.641 2015 612213311317.477 2016 631022556688.595 2017 636932611152.675