Year	Percent of GDP
2004-01-01	46.2787
2005-01-01	52.2422
2006-01-01	54.8883
2007-01-01	52.9354
2008-01-01	50.1120
2009-01-01	59.4238
2010-01-01	58.2209
2011-01-01	59.4051
2012-01-01	61.9919
2013-01-01	66.1330
2014-01-01	66.8828
2015-01-01	68.8185
2016-01-01	68.1717