Year	Percent
1996-01-01	100.00000000000000
1997-01-01	100.00000000000000
1998-01-01	100.00000000000000
1999-01-01	98.97130000000000
2000-01-01	98.54950000000000
2001-01-01	97.69350000000000
2002-01-01	96.36399999999999
2003-01-01	86.32810000000000
2004-01-01	86.22830000000000
2005-01-01	84.67220000000000
2006-01-01	79.23330000000000
2007-01-01	77.56510000000000
2008-01-01	73.07550000000000
2009-01-01	70.88750000000000
2010-01-01	67.91170000000000
2011-01-01	72.08030000000000
2012-01-01	68.01580000000000
2013-01-01	67.67800000000000
2014-01-01	66.26890000000000
2015-01-01	69.57550000000000
2016-01-01	66.63420000000000