Year	Percent of GDP
2004-01-01	43.6093
2005-01-01	46.7204
2006-01-01	48.1678
2007-01-01	51.8310
2008-01-01	51.0470
2009-01-01	53.6758
2010-01-01	54.4454
2011-01-01	55.6854
2012-01-01	56.2959
2013-01-01	55.9668
2014-01-01	57.9796
2015-01-01	58.1512
2016-01-01	60.1096
2017-01-01	63.7344