2004-05-01 100%

2007-01-01 61.2%

2004-09-01 59.9%

2019-04-04 59.7%

2018-09-01 59.1%

2003-12-01 58.8%

2010-04-01 58.5%

2006-08-01 58.4%

2005-08-01 58.2%

2002-06-01 58.2%

2005-03-01 58.2%

2008-05-01 58.1%

2003-07-01 58%

2008-06-01 58%

2007-11-01 58%

2004-06-01 57.8%

2006-11-01 57.6%

2005-02-01 57.5%

1997-09-01 57.5%

2002-02-01 57.4%

2012-05-01 57.4%

1997-03-01 57.3%

2005-10-01 57.3%

2008-08-01 57.2%

2014-02-01 57.2%

2007-06-01 57.2%

2008-10-01 56.8%

2008-03-01 56.7%

2015-11-01 56.7%

2002-10-01 56.6%

2015-05-01 56.5%

2013-01-01 56.3%

2006-03-01 56.3%

2006-02-01 56.2%

2008-02-01 56.2%

2004-10-01 56.2%

2015-01-04 56.1%

2009-12-01 56%

2006-07-01 56%

2015-10-01 55.9%

2005-01-01 55.8%

2001-07-01 55.8%

2009-04-01 55.6%

2006-12-01 55.6%

2013-05-01 55.6%

2011-09-01 55.6%

2002-04-01 55.5%

2007-12-01 55.5%

1998-01-01 55.5%

2010-05-01 55.5%