Year	Percent of GDP
2004-01-01	39.7483
2005-01-01	41.0108
2006-01-01	42.7620
2007-01-01	43.2286
2008-01-01	41.6930
2009-01-01	40.1054
2010-01-01	37.5438
2011-01-01	36.1986
2012-01-01	37.4463
2013-01-01	40.6893
2014-01-01	40.3917
2015-01-01	40.5258
2016-01-01	41.4804