Year	Percent of GDP
2004-01-01	16.0730
2005-01-01	19.4410
2006-01-01	22.1125
2007-01-01	23.1900
2008-01-01	21.6487
2009-01-01	27.1011
2010-01-01	27.5232
2011-01-01	24.1019
2012-01-01	24.2167
2013-01-01	24.0814
2014-01-01	26.4920
2015-01-01	27.2942
2016-01-01	28.1519
2017-01-01	30.2944