Year	Percent of GDP
2008-01-01	15.8291
2009-01-01	16.4905
2010-01-01	17.1953
2011-01-01	16.8625
2012-01-01	17.0176
2013-01-01	15.9967
2014-01-01	16.9564
2015-01-01	17.2574
2016-01-01	15.0622