Year	Percent of GDP
2007-01-01	0.7369
2008-01-01	0.9367
2009-01-01	1.3746
2010-01-01	1.4417
2011-01-01	1.6117
2012-01-01	1.5202
2013-01-01	1.6304
2014-01-01	1.8555
2015-01-01	2.0212
2016-01-01	2.5310