Year	Percent of GDP
2004-01-01	15.9912
2005-01-01	18.4391
2006-01-01	13.4707
2007-01-01	17.9080
2008-01-01	19.7716
2009-01-01	18.9318
2010-01-01	15.3946
2011-01-01	15.5493
2012-01-01	16.9740
2013-01-01	18.2121
2014-01-01	21.2661
2015-01-01	21.6956
2016-01-01	20.9828