Year constant 2010 US$ 2008 784.291732646958 2009 795.460596353198 2010 812.957113495325 2011 760.205516961423 2012 813.245979102301 2013 826.848936229824 2014 888.814181018558 2015 985.6838269765 2016 1068.28211335117 2017 1080.62046107124 2018 1135.25263821617