Year constant 2011 international $ 2008 12054321696.3932 2009 12568269354.2704 2010 14134039127.6169 2011 13447818511.792 2012 14046945576.6544 2013 14640330209.5853 2014 13683208166.1222 2015 10121004791.7566 2016 8505339601.59969