Year	Percent of GDP
2004-01-01	19.2491
2005-01-01	19.5000
2006-01-01	19.7754
2007-01-01	20.1228
2008-01-01	21.2167
2009-01-01	20.6254
2010-01-01	19.2490
2011-01-01	19.2842
2012-01-01	19.6290
2013-01-01	19.7044
2014-01-01	20.7180
2015-01-01	22.2225
2016-01-01	22.8780