Year	Percent of GDP
2004-01-01	24.0925
2005-01-01	22.9609
2006-01-01	17.0520
2007-01-01	18.4975
2008-01-01	21.0494
2009-01-01	21.9777
2010-01-01	22.9649
2011-01-01	23.8326
2012-01-01	25.9987
2013-01-01	24.9762
2014-01-01	28.6106
2015-01-01	29.7316
2016-01-01	30.6154