Year	Percent of GDP
2004-01-01	8.1364
2005-01-01	8.8733
2006-01-01	9.1179
2007-01-01	9.6095
2008-01-01	10.4996
2009-01-01	11.3271
2010-01-01	12.7321
2011-01-01	13.8371
2012-01-01	14.3641
2013-01-01	14.7238
2014-01-01	15.5576
2015-01-01	16.3142