Year	Percent
1996-01-01	99.43690000000000
1997-01-01	99.45230000000000
1998-01-01	99.34620000000000
1999-01-01	99.15580000000000
2000-01-01	100.00000000000000
2001-01-01	100.00000000000000
2002-01-01	100.00000000000000
2003-01-01	100.00000000000000
2004-01-01	100.00000000000000
2005-01-01	99.90580000000000
2006-01-01	99.98420000000000
2007-01-01	99.53220000000000
2008-01-01	98.13750000000000
2009-01-01	97.65160000000000
2010-01-01	98.00230000000000
2011-01-01	97.79799999999999
2012-01-01	97.02290000000000
2013-01-01	95.49460000000000
2014-01-01	94.84500000000000
2015-01-01	95.19160000000000
2016-01-01	83.16530000000000