Year	Percent of GDP
2004-01-01	5.4607
2005-01-01	7.0015
2006-01-01	9.2146
2007-01-01	12.9280
2008-01-01	15.9695
2009-01-01	16.4024
2010-01-01	16.4388
2011-01-01	16.7518
2012-01-01	17.8022
2013-01-01	18.3195
2014-01-01	19.5286
2015-01-01	20.9308
2016-01-01	20.8392