Year	% of GDP
2006	8.967533500126121
2007	7.009191250017929
2008	8.052705822314476
2009	10.5750824702327
2010	11.091949157320524
2011	11.510160715030725
2012	10.200624642516203
2013	9.40560933162746
2014	8.613730504620456
2015	10.131118168369694
2016	12.678009904576005
2017	13.039262222754406