Year	Percent of GDP
2004-01-01	26.3724
2005-01-01	27.8322
2006-01-01	29.5238
2007-01-01	29.1811
2008-01-01	28.8319
2009-01-01	30.8548
2010-01-01	32.1752
2011-01-01	31.6252
2012-01-01	32.7972
2013-01-01	33.8261
2014-01-01	34.2538
2015-01-01	34.7326
2016-01-01	34.4779
2017-01-01	37.0694