Year constant 2010 US$ 2007 695.560375484866 2008 672.541940787974 2009 777.44635899609 2010 861.967169476267 2011 840.783576079089 2012 886.229849568554 2013 884.73627686722 2014 918.116434174779 2015 931.337164756657 2016 855.230004409341 2017 808.709603051456