Year	Percent of GDP
2004-01-01	20.4312
2005-01-01	22.3043
2006-01-01	26.8206
2007-01-01	33.4963
2008-01-01	40.4705
2009-01-01	41.8960
2010-01-01	42.6587
2011-01-01	43.6044
2012-01-01	46.3303
2013-01-01	45.8530
2014-01-01	47.9439
2015-01-01	49.7158
2016-01-01	46.2526