Year	Percent of GDP
2004-01-01	51.1632
2005-01-01	50.8503
2006-01-01	50.1298
2007-01-01	48.9396
2008-01-01	57.3736
2009-01-01	66.3796
2010-01-01	71.9857
2011-01-01	69.4957
2012-01-01	68.2631
2013-01-01	66.2966
2014-01-01	65.1536
2015-01-01	65.6379
2016-01-01	66.0652