Year	Percent of GDP
2004-01-01	4.4499
2005-01-01	5.7415
2006-01-01	14.4586
2007-01-01	29.2558
2008-01-01	33.1362
2009-01-01	30.4666
2010-01-01	27.3247
2011-01-01	25.2220
2012-01-01	25.0486
2013-01-01	25.7856
2014-01-01	25.4479
2015-01-01	24.9925
2016-01-01	26.6343
2017-01-01	29.4607