Year Percent 2001-01-01 0.41820799999999997 2002-01-01 0.76420900000000000 2003-01-01 0.84469699999999990 2004-01-01 1.05017000000000000 2005-01-01 0.41356700000000000 2006-01-01 0.60861599999999990 2007-01-01 0.62232700000000010 2008-01-01 0.59187000000000000 2009-01-01 0.60884600000000000 2010-01-01 0.25244300000000000 2011-01-01 0.70488700000000000 2012-01-01 0.60616500000000000 2013-01-01 0.58588500000000000 2014-01-01 0.51943800000000010 2015-01-01 0.46506600000000000