Year	Percent of GDP
2004-01-01	45.4593
2005-01-01	49.3496
2006-01-01	52.1713
2007-01-01	53.1988
2008-01-01	51.3325
2009-01-01	52.5473
2010-01-01	53.9689
2011-01-01	56.2609
2012-01-01	60.1157
2013-01-01	59.1218
2014-01-01	60.5872
2015-01-01	64.3609
2016-01-01	61.6243
2017-01-01	66.9423