Year	Percent of GDP
2004-01-01	23.0918
2005-01-01	26.4815
2006-01-01	31.6579
2007-01-01	33.1352
2008-01-01	37.1556
2009-01-01	40.2952
2010-01-01	42.0840
2011-01-01	46.4591
2012-01-01	45.0547
2013-01-01	46.7479
2014-01-01	47.5697
2015-01-01	41.4438
2016-01-01	43.8632