Year	Percent of GDP
2004-01-01	12.4812
2005-01-01	13.6340
2006-01-01	14.7152
2007-01-01	18.5397
2008-01-01	19.1913
2009-01-01	20.9375
2010-01-01	22.0456
2011-01-01	23.0299
2012-01-01	24.6345
2013-01-01	24.7179
2014-01-01	25.8591
2015-01-01	25.6781
2016-01-01	26.3779
2017-01-01	27.4421