Year % of GDP 2008 3.693735509420468 2009 2.4800741817424146 2010 0.741206509912135 2011 2.684453918643528 2012 4.964447223166967 2013 1.876399369007211 2014 10.683848715449436 2015 13.907368292005525 2016 10.328001538461539 2017 20.875085236768804 2018 19.895906632653062 2019 16.569955329949238 2020 8.446756720430107