Year constant 2010 US$ 2007 8073532814.26239 2008 8432200621.30703 2009 10101977323.7826 2010 11371718250.5951 2011 10949678192.7613 2012 12305951804.6012 2013 13194067073.5889 2014 14274474681.809 2015 12238262932.7107 2016 11148456688.6867 2017 10645170012.4185 2018 10802133980.8368