Year Percent 2003-01-01 100.0000 2004-01-01 100.0000 2005-01-01 100.0000 2006-01-01 93.5889 2007-01-01 87.8853 2008-01-01 100.0000 2009-01-01 95.9378 2010-01-01 100.0000 2011-01-01 100.0000 2012-01-01 100.0000 2013-01-01 100.0000 2014-01-01 100.0000 2015-01-01 100.0000 2016-01-01 100.0000