Year	Percent of GDP
2004-01-01	35.7787
2005-01-01	37.3094
2006-01-01	39.1795
2007-01-01	39.8691
2008-01-01	41.5054
2009-01-01	44.3287
2010-01-01	46.8931
2011-01-01	49.8889
2012-01-01	51.2180
2013-01-01	51.8944
2014-01-01	53.0334
2015-01-01	52.8080
2016-01-01	52.3965