Year	Percent of GDP
2004-01-01	0.7044
2005-01-01	0.7298
2006-01-01	1.2380
2007-01-01	1.2844
2008-01-01	1.7153
2009-01-01	2.1779
2010-01-01	3.9091
2011-01-01	3.4842
2012-01-01	3.9161
2013-01-01	3.8830
2014-01-01	3.6820
2015-01-01	4.5912
2016-01-01	4.7594
2017-01-01	5.0727