Year	Percent of GDP
2004-01-01	50.2706
2005-01-01	49.9922
2006-01-01	50.1132
2007-01-01	49.4784
2008-01-01	47.2273
2009-01-01	52.7200
2010-01-01	49.4397
2011-01-01	50.0894
2012-01-01	52.4033
2013-01-01	53.4763
2014-01-01	52.5087
2015-01-01	52.8622
2016-01-01	52.2862