Year	Percent of GDP
2004-01-01	15.6975
2005-01-01	18.3757
2006-01-01	20.1699
2007-01-01	23.3236
2008-01-01	26.3562
2009-01-01	26.8228
2010-01-01	27.3550
2011-01-01	27.1731
2012-01-01	28.3938
2013-01-01	28.1240
2014-01-01	27.1726
2015-01-01	26.0082
2016-01-01	26.3097
2017-01-01	28.4154