Year	Percent of GDP
2004-01-01	21.1590
2005-01-01	18.8640
2006-01-01	18.3783
2007-01-01	21.6542
2008-01-01	19.2802
2009-01-01	20.8864
2010-01-01	19.3462
2011-01-01	15.9747
2012-01-01	16.3015
2013-01-01	17.6101
2014-01-01	16.4812
2015-01-01	18.1982
2016-01-01	19.2783