Year	Percent of GDP
2005-01-01	16.7990
2006-01-01	17.5090
2007-01-01	18.6938
2008-01-01	19.8864
2009-01-01	20.5740
2010-01-01	20.5933
2011-01-01	21.1510
2012-01-01	21.9157
2013-01-01	21.6081
2014-01-01	21.3599
2015-01-01	19.9606
2016-01-01	20.1835
2017-01-01	21.3932