Year	Percent
1996-01-01	66.951100000000000
1997-01-01	64.009000000000000
1998-01-01	64.638100000000000
1999-01-01	62.157300000000000
2000-01-01	74.616000000000000
2001-01-01	72.085100000000000
2002-01-01	85.556400000000000
2003-01-01	79.102300000000000
2004-01-01	80.254800000000000
2005-01-01	62.522400000000000
2006-01-01	54.364500000000000
2007-01-01	53.123999999999995
2008-01-01	48.019900000000000
2009-01-01	52.594200000000000
2010-01-01	60.546400000000000
2011-01-01	68.397500000000000
2012-01-01	51.689700000000000
2013-01-01	55.935500000000000
2014-01-01	51.105800000000000