Year Percent 1995-01-01 0.5322580000000000 1996-01-01 0.5847500000000000 1997-01-01 0.6112470000000000 1998-01-01 0.6533100000000001 1999-01-01 0.5650870000000000 2000-01-01 0.7126810000000000 2001-01-01 0.8992270000000000 2002-01-01 1.0305100000000000 2003-01-01 0.8744209999999999 2004-01-01 0.9462590000000000 2005-01-01 0.8750670000000000 2006-01-01 0.8370020000000000 2007-01-01 0.8647540000000001 2008-01-01 0.8387950000000001 2009-01-01 0.7053320000000000 2010-01-01 0.7851920000000000 2011-01-01 0.7868140000000000 2012-01-01 0.7427550000000000 2013-01-01 0.7529440000000000 2014-01-01 0.8196240000000000 2015-01-01 0.7925590000000000