Year	Percent of GDP
2004-01-01	26.1776
2005-01-01	29.2274
2006-01-01	32.6607
2007-01-01	35.2113
2008-01-01	36.5883
2009-01-01	37.3456
2010-01-01	38.7770
2011-01-01	38.5287
2012-01-01	38.2129
2013-01-01	37.5014
2014-01-01	37.2889
2015-01-01	36.0735
2016-01-01	33.0656