Year	Percent of GDP
2004-01-01	17.7270
2005-01-01	20.0336
2006-01-01	22.2411
2007-01-01	25.6205
2008-01-01	21.7595
2009-01-01	22.2928
2010-01-01	26.5282
2011-01-01	32.0438
2012-01-01	36.3327
2013-01-01	41.0603
2014-01-01	41.8581
2015-01-01	41.6605
2016-01-01	44.8038