Year	Percent of GDP
2004-01-01	15.06871330
2005-01-01	15.69808200
2006-01-01	18.30261095
2007-01-01	21.47799130
2008-01-01	20.91775287
2009-01-01	21.16964245
2010-01-01	20.80079341
2011-01-01	21.93664558
2012-01-01	25.02820461
2013-01-01	24.97697547
2014-01-01	25.73162005
2015-01-01	26.44035845
2016-01-01	27.64791078