Year	Percent of GDP
2006-01-01	17.5683
2007-01-01	18.5305
2008-01-01	17.9861
2009-01-01	20.5482
2010-01-01	22.3558
2011-01-01	21.6753
2012-01-01	20.9153
2013-01-01	20.3663
2014-01-01	20.7876
2015-01-01	21.4038