Year	Percent
1996-01-01	100.0000
1997-01-01	100.0000
1998-01-01	100.0000
1999-01-01	100.0000
2000-01-01	98.8740
2001-01-01	97.8076
2002-01-01	97.2972
2003-01-01	97.4471
2004-01-01	99.0171
2005-01-01	98.0358
2006-01-01	98.4963
2007-01-01	97.9547
2008-01-01	96.3202
2009-01-01	94.4630
2010-01-01	95.3538
2011-01-01	93.3466
2012-01-01	93.0779
2013-01-01	92.3858
2014-01-01	89.7846
2015-01-01	89.7866
2016-01-01	89.7447