Year	Percent of GDP
2004-01-01	9.2820
2005-01-01	10.7306
2006-01-01	11.5980
2007-01-01	12.8287
2008-01-01	13.3296
2009-01-01	15.0195
2010-01-01	16.9187
2011-01-01	19.5543
2012-01-01	20.8686
2013-01-01	21.4754
2014-01-01	21.7209
2015-01-01	21.8703
2016-01-01	22.6318