Year	Percent of GDP
2004-01-01	19.4116
2005-01-01	23.4864
2006-01-01	27.7962
2007-01-01	28.9694
2008-01-01	29.5990
2009-01-01	32.3364
2010-01-01	32.2194
2011-01-01	22.7783
2012-01-01	24.0053
2013-01-01	28.7751
2014-01-01	27.2627
2015-01-01	29.0780
2016-01-01	30.5321