Year	Percent
1996-01-01	8.2000000000000000
1997-01-01	8.2000000000000000
1998-01-01	8.2000000000000000
1999-01-01	5.5729200000000000
2000-01-01	6.1250000000000000
2001-01-01	6.0312500000000000
2002-01-01	6.0416700000000000
2003-01-01	6.5000000000000000
2004-01-01	6.5000000000000000
2005-01-01	6.5000000000000000
2006-01-01	6.5000000000000000
2007-01-01	6.5000000000000000
2008-01-01	6.5000000000000000
2009-01-01	6.5000000000000000
2010-01-01	6.3266200000000000
2011-01-01	6.0239000000000000
2012-01-01	6.7530399999999995
2013-01-01	7.3353800000000010
2014-01-01	7.2785600000000010
2015-01-01	6.9841600000000000
2016-01-01	6.9806800000000000