Year	Percent of GDP
2004-01-01	17.5538
2005-01-01	15.5541
2006-01-01	16.7001
2007-01-01	17.5082
2008-01-01	18.2731
2009-01-01	18.8323
2010-01-01	18.3389
2011-01-01	18.7898
2012-01-01	18.8617
2013-01-01	17.2810
2014-01-01	17.3528
2015-01-01	19.0808
2016-01-01	20.1032
2017-01-01	23.4690