Year	Percent of GDP
2004-01-01	9.6587
2005-01-01	9.6092
2006-01-01	10.4117
2007-01-01	13.4196
2008-01-01	12.8007
2009-01-01	13.4545
2010-01-01	15.0617
2011-01-01	14.7917
2012-01-01	16.0119
2013-01-01	16.0202
2014-01-01	18.1155
2015-01-01	18.4220
2016-01-01	18.6234