Year Percent 1996-01-01 97.3638 1997-01-01 97.1959 1998-01-01 97.0824 1999-01-01 100.0000 2000-01-01 97.3648 2001-01-01 100.0000 2002-01-01 100.0000 2003-01-01 96.7024 2004-01-01 100.0000 2005-01-01 100.0000 2006-01-01 96.7489 2007-01-01 99.9358 2008-01-01 99.7492 2009-01-01 98.7369 2010-01-01 96.6998 2011-01-01 96.5808 2012-01-01 96.3913 2013-01-01 95.5856 2014-01-01 97.1641 2015-01-01 97.6772 2016-01-01 98.2025