Year	Percent of GDP
2004-01-01	28.1722
2005-01-01	27.6561
2006-01-01	27.2819
2007-01-01	27.7419
2008-01-01	28.1349
2009-01-01	31.2309
2010-01-01	30.6641
2011-01-01	31.0063
2012-01-01	30.8039
2013-01-01	30.9227
2014-01-01	30.5783
2015-01-01	30.3119
2016-01-01	30.1844
2017-01-01	30.5367