Year	Percent of GDP
2004-01-01	17.9930
2005-01-01	18.4905
2006-01-01	19.2635
2007-01-01	19.4524
2008-01-01	20.4388
2009-01-01	22.4423
2010-01-01	22.6531
2011-01-01	23.3574
2012-01-01	23.6263
2013-01-01	23.9561
2014-01-01	24.2294
2015-01-01	24.1101
2016-01-01	24.3809
2017-01-01	25.2281