Year	Percent of GDP
2004-01-01	35.0721
2005-01-01	35.5249
2006-01-01	36.7972
2007-01-01	37.7775
2008-01-01	39.5694
2009-01-01	41.2083
2010-01-01	40.5085
2011-01-01	43.0680
2012-01-01	44.3524
2013-01-01	44.7911
2014-01-01	46.0492
2015-01-01	47.6157
2016-01-01	49.6719