Year	Percent of GDP
2004-01-01	53.7867
2005-01-01	53.5574
2006-01-01	52.6622
2007-01-01	53.7880
2008-01-01	54.9977
2009-01-01	57.3545
2010-01-01	63.2231
2011-01-01	70.1031
2012-01-01	70.0780
2013-01-01	70.2599
2014-01-01	71.1010
2015-01-01	72.0481
2016-01-01	74.0480