Year	Percent of GDP
2004-01-01	19.3997
2005-01-01	21.5990
2006-01-01	25.1489
2007-01-01	28.0750
2008-01-01	26.8214
2009-01-01	25.3906
2010-01-01	24.7826
2011-01-01	25.4021
2012-01-01	28.3760
2013-01-01	29.7780
2014-01-01	30.3453
2015-01-01	32.1506
2016-01-01	31.9501
2017-01-01	33.0794