Year	Percent of GDP
2004-01-01	23.1239
2005-01-01	23.2226
2006-01-01	15.0962
2007-01-01	14.1868
2008-01-01	15.6708
2009-01-01	14.8467
2010-01-01	15.8104
2011-01-01	17.1639
2012-01-01	18.6887
2013-01-01	20.0081
2014-01-01	20.9205
2015-01-01	20.7290
2016-01-01	19.3239
2017-01-01	19.7831