Year Percent 2000 96.53851 2001 96.4441 2002 96.34969 2003 96.25528 2004 96.16087 2005 96.06646 2006 95.97205 2007 95.87764 2008 95.78323 2009 95.68882 2010 95.59441 2011 95.5 2012 95.40559 2013 95.31118 2014 95.31118 2015 95.31118 2016 95.31118 2017 95.31118