Year % of GDP 2008 9.151583348735729 2009 3.8686846601579385 2010 4.379666884209383 2011 3.5985273258006107 2012 2.34187734285625 2013 2.663977842217221 2014 3.303603568384212 2015 3.0119813087156144 2016 4.432305814972731