Year	Percent of GDP
2004-01-01	56.1577
2005-01-01	58.5030
2006-01-01	53.5500
2007-01-01	55.5540
2008-01-01	62.8595
2009-01-01	63.6067
2010-01-01	69.0830
2011-01-01	70.4515
2012-01-01	75.3679
2013-01-01	77.5484
2014-01-01	74.9797
2015-01-01	76.6100
2016-01-01	71.5285