Year	Percent of GDP
2004-01-01	22.5070
2005-01-01	28.6816
2006-01-01	32.2507
2007-01-01	36.6844
2008-01-01	35.6412
2009-01-01	34.0228
2010-01-01	36.4568
2011-01-01	35.8513
2012-01-01	38.8391
2013-01-01	43.7381
2014-01-01	40.4177
2015-01-01	34.2816
2016-01-01	31.9498
2017-01-01	35.5571