Year	Percent
2004-01-01	5.6233300000000000
2005-01-01	6.4758300000000000
2006-01-01	6.8133300000000006
2007-01-01	6.4600000000000000
2008-01-01	6.0175000000000000
2009-01-01	5.8566699999999990
2010-01-01	5.8975000000000000
2011-01-01	6.1933300000000004
2012-01-01	5.5400000000000000
2013-01-01	4.8141700000000000
2014-01-01	4.4650000000000000
2015-01-01	4.1833300000000010
2016-01-01	3.9208300000000005