Year % of GDP 2008 9.476843810944322 2009 10.755863759975604 2010 10.263238879621696 2011 7.6172689314844 2012 4.048520721983758 2013 3.85856910800262 2014 2.9271962792351025 2015 3.8012763825339406 2016 3.0752912557726333