Year	Percent of GDP
2004-01-01	21.9991
2005-01-01	25.1202
2006-01-01	27.4252
2007-01-01	29.6591
2008-01-01	30.2593
2009-01-01	33.7640
2010-01-01	36.9286
2011-01-01	38.7028
2012-01-01	42.4681
2013-01-01	46.3007
2014-01-01	47.2629
2015-01-01	48.2662
2016-01-01	49.0961
2017-01-01	51.6794