Year	Percent of GDP
2004-01-01	2.8948
2005-01-01	3.2682
2006-01-01	3.2949
2007-01-01	2.7292
2008-01-01	2.5310
2009-01-01	2.4599
2010-01-01	2.5483
2011-01-01	3.6589
2012-01-01	5.4003
2013-01-01	7.9688
2014-01-01	10.1925
2015-01-01	13.0490
2016-01-01	15.3112