Year	Percent of GDP
2004-01-01	4.4893
2005-01-01	4.9629
2006-01-01	6.3281
2007-01-01	9.8086
2008-01-01	11.4995
2009-01-01	12.1699
2010-01-01	16.3915
2011-01-01	19.9752
2012-01-01	17.6785
2013-01-01	18.6277
2014-01-01	19.6841
2015-01-01	18.7268
2016-01-01	18.1190