2004-06-01 100%

2005-01-01 63.6%

2008-02-01 60.3%

2008-05-01 60.3%

2019-04-04 59.9%

2013-05-01 59.9%

2002-06-01 59.6%

2013-01-01 59%

2009-04-01 58.3%

2007-03-01 57.9%

2004-05-01 57.8%

2002-05-01 57.6%

2002-10-01 57.6%

2008-07-01 57.4%

2012-05-01 57.4%

2004-02-01 57.3%

2013-02-01 57.3%

2002-02-01 57%

2006-03-01 57%

2015-11-01 56.9%

2004-10-01 56.9%

2007-11-01 56.8%

2015-04-01 56.7%

2007-01-01 56.7%

2008-03-01 56.7%

2007-12-01 56.6%

1993-01-01 56.6%

2005-02-01 56.5%

2009-02-01 56.4%

2008-01-01 56.4%

2003-09-01 56.4%

2007-04-01 56.3%

2006-02-01 56.3%

2002-11-01 56.3%

2002-09-01 56.3%

2005-08-01 56.1%

2017-06-01 56.1%

2005-03-01 56.1%

2012-01-01 56%

2004-09-01 56%

2008-06-01 55.9%

2005-11-01 55.9%

2014-05-01 55.8%

1992-09-01 55.8%

2014-09-01 55.8%

2001-08-01 55.7%

2008-10-01 55.7%

2004-04-01 55.6%

2015-05-01 55.6%

2000-07-01 55.5%