Year	Percent of GDP
2004-01-01	8.6973
2005-01-01	12.9358
2006-01-01	14.7688
2007-01-01	16.5208
2008-01-01	15.7233
2009-01-01	19.6819
2010-01-01	15.4582
2011-01-01	13.5233
2012-01-01	16.3143
2013-01-01	18.9516
2014-01-01	20.5979
2015-01-01	23.8978
2016-01-01	23.3784
2017-01-01	26.5480