Year	Percent of GDP
2004-01-01	23.4354
2005-01-01	23.1707
2006-01-01	24.0582
2007-01-01	23.0653
2008-01-01	24.2215
2009-01-01	25.7260
2010-01-01	27.2130
2011-01-01	29.4811
2012-01-01	29.5361
2013-01-01	29.2225
2014-01-01	29.6785
2015-01-01	30.7923
2016-01-01	31.8012