Year	Percent of GDP
2004-01-01	31.7666
2005-01-01	32.7564
2006-01-01	34.5266
2007-01-01	34.0314
2008-01-01	35.9019
2009-01-01	38.3640
2010-01-01	37.1636
2011-01-01	38.2067
2012-01-01	37.1765
2013-01-01	35.0508
2014-01-01	33.6729
2015-01-01	35.1080
2016-01-01	36.5076