Year	Percent of GDP
2004-01-01	4.6712
2005-01-01	7.2410
2006-01-01	11.2016
2007-01-01	16.9819
2008-01-01	18.8192
2009-01-01	19.5264
2010-01-01	19.0244
2011-01-01	18.3529
2012-01-01	17.4509
2013-01-01	16.1002
2014-01-01	15.1815
2015-01-01	15.0780
2016-01-01	14.7412
2017-01-01	15.8838