Year % of GDP 2008 7.428531771991542 2009 5.65304097963106 2010 10.679159766493997 2011 7.308386261298935 2012 8.082319160883383 2013 4.340057406125504 2014 4.475054964415897 2015 4.693195459806423 2016 5.5058389462925845