Year	Percent of GDP
2004-01-01	20.0810
2005-01-01	20.4827
2006-01-01	19.9207
2007-01-01	20.0232
2008-01-01	22.0682
2009-01-01	24.1717
2010-01-01	22.2726
2011-01-01	22.8806
2012-01-01	22.1822
2013-01-01	18.7480
2014-01-01	17.7441
2015-01-01	17.6081
2016-01-01	17.8823