Year	Percent of GDP
2004-01-01	4.7212
2005-01-01	7.7741
2006-01-01	10.1199
2007-01-01	13.2359
2008-01-01	15.6889
2009-01-01	16.2378
2010-01-01	18.6327
2011-01-01	17.6664
2012-01-01	18.2395
2013-01-01	17.3869
2014-01-01	18.5643
2015-01-01	18.8041
2016-01-01	20.0123
2017-01-01	21.5534