Year	Percent
2000-01-01	8.600000000000000
2001-01-01	8.600000000000000
2002-01-01	8.600000000000000
2003-01-01	8.600000000000000
2004-01-01	8.600000000000000
2005-01-01	8.600000000000000
2006-01-01	8.600000000000000
2007-01-01	8.600000000000000
2008-01-01	8.600000000000000
2009-01-01	8.600000000000000
2010-01-01	9.620970000000000
2011-01-01	10.693600000000000
2012-01-01	11.125700000000000
2013-01-01	11.625900000000000
2014-01-01	10.119700000000000
2015-01-01	9.006960000000001
2016-01-01	8.363890000000000