Year	Percent of GDP
2004-01-01	12.0372
2005-01-01	14.6879
2006-01-01	17.5593
2007-01-01	21.0200
2008-01-01	26.4857
2009-01-01	27.7970
2010-01-01	29.7874
2011-01-01	28.3601
2012-01-01	23.4343
2013-01-01	21.1650
2014-01-01	19.4335
2015-01-01	16.0847
2016-01-01	14.6509