Year	Percent of GDP
2004-01-01	1.7520
2005-01-01	1.8464
2006-01-01	2.2632
2007-01-01	2.8596
2008-01-01	3.5225
2009-01-01	3.6596
2010-01-01	3.9451
2011-01-01	4.1888
2012-01-01	4.3533
2013-01-01	4.5543