Year	Percent of GDP
2004-01-01	17.8750
2005-01-01	17.0078
2006-01-01	16.4407
2007-01-01	15.5541
2008-01-01	15.8205
2009-01-01	16.8805
2010-01-01	15.3881
2011-01-01	14.0035
2012-01-01	13.1189
2013-01-01	12.7162
2014-01-01	11.6060
2015-01-01	10.2077
2016-01-01	8.2611