Year	Percent
1996-01-01	100.0000
1997-01-01	99.2106
1998-01-01	98.0435
1999-01-01	96.3278
2000-01-01	97.9197
2001-01-01	96.3650
2002-01-01	97.2259
2003-01-01	96.8869
2004-01-01	98.5835
2005-01-01	97.7808
2006-01-01	94.3725
2007-01-01	94.0398
2008-01-01	99.0266
2009-01-01	98.9124
2010-01-01	99.6082
2011-01-01	100.0000
2012-01-01	100.0000
2013-01-01	100.0000
2014-01-01	100.0000