Year Percent 2003-01-01 46.4000 2004-01-01 56.6000 2005-01-01 60.3000 2006-01-01 58.9000 2007-01-01 56.1000 2008-01-01 47.7000 2009-01-01 52.9000 2010-01-01 56.7245 2011-01-01 35.7843 2012-01-01 51.2623 2013-01-01 47.3531 2014-01-01 48.7215 2015-01-01 45.7058 2016-01-01 41.0810