Year	Percent of GDP
2004-01-01	6.4550
2005-01-01	7.2563
2006-01-01	8.6532
2007-01-01	9.9715
2008-01-01	11.0083
2009-01-01	12.6066
2010-01-01	12.6837
2011-01-01	14.0703
2012-01-01	14.3790
2013-01-01	14.9985
2014-01-01	15.1411
2015-01-01	17.0540