Year	Percent of GDP
2004-01-01	8.1673
2005-01-01	9.9297
2006-01-01	11.6012
2007-01-01	13.4884
2008-01-01	13.7936
2009-01-01	12.4304
2010-01-01	12.5115
2011-01-01	14.7409
2012-01-01	16.1750
2013-01-01	17.5500
2014-01-01	17.3755
2015-01-01	16.9366
2016-01-01	17.4738