Year	Percent of GDP
2004-01-01	42.2040
2005-01-01	40.8927
2006-01-01	41.1138
2007-01-01	44.2178
2008-01-01	46.4639
2009-01-01	46.6631
2010-01-01	46.9275
2011-01-01	48.5111
2012-01-01	50.3260
2013-01-01	51.8466
2014-01-01	52.1887
2015-01-01	51.4576
2016-01-01	49.1556