Year constant 2011 international $ 2006 7685256733.16199 2007 7848517088.54541 2008 8261076763.93695 2009 8701885133.0267 2010 9153653259.57195 2011 9641292142.13269 2012 10046191888.3253 2013 10454802588.918 2014 10828164632.2649 2015 11597257226.8946 2016 12239944761.079 2017 12794954441.1824