Year Percent 2008-01-01 100.0000 2009-01-01 100.0000 2010-01-01 100.0000 2011-01-01 100.0000 2012-01-01 100.0000 2013-01-01 96.4633 2014-01-01 97.2219 2015-01-01 90.1631 2016-01-01 91.2280