Year	Percent of GDP
2004-01-01	1.4784
2005-01-01	1.8325
2006-01-01	2.0403
2007-01-01	2.4338
2008-01-01	3.1486
2009-01-01	3.7216
2010-01-01	3.9887
2011-01-01	4.1361
2012-01-01	4.4039
2013-01-01	4.5974
2014-01-01	4.6892
2015-01-01	4.7463
2016-01-01	4.9690
2017-01-01	5.6550