Year constant 2010 US$ 2007 12677703382.7443 2008 12125429743.9618 2009 11550567898.2254 2010 11620050305.8244 2011 11657774150.6283 2012 11866093091.0599 2013 11696997039.8825 2014 11692134213.4246 2015 11990518506.6887 2016 12171894846.7517 2017 12343890694.8671