date,value 2001-04-01,6.75 2001-04-01,6.75 2001-05-01,6.75 2001-06-01,6.75 2001-07-01,6.75 2001-08-01,6.75 2001-09-01,6.75 2001-10-01,6.75 2001-11-01,6.75 2001-12-01,6.75 2002-01-01,6.75 2002-02-01,6.75 2002-03-01,6.75 2002-04-01,6.75 2002-05-01,6.75 2002-06-01,6.75 2002-07-01,6.75 2002-08-01,6.75 2002-09-01,6.75 2002-10-01,6.75 2002-11-01,6.75 2002-12-01,6.75 2003-01-01,6.75 2003-02-01,6.75 2003-03-01,5 2003-03-01,5 2003-03-01,5 2003-04-01,5 2003-05-01,5 2003-06-01,5 2003-07-01,5 2003-08-01,5 2003-09-01,5 2003-10-01,5 2003-11-01,5 2003-12-01,5 2004-01-01,5 2004-02-01,5 2004-03-01,5 2004-04-01,5 2004-05-01,5 2004-06-01,5 2004-07-01,5 2004-08-01,5 2004-09-01,5 2004-10-01,5 2004-11-01,5 2004-12-01,5 2005-01-01,5 2005-02-01,5 2005-03-01,5 2005-04-01,5 2005-05-01,5 2005-06-01,5 2005-07-01,5 2005-08-01,5 2005-09-01,5 2005-10-01,5 2005-11-01,5 2005-12-01,5 2006-01-01,5.5 2006-02-01,5.5 2006-03-01,5.5 2006-04-01,5.5 2006-05-01,5.5 2006-06-01,5.75 2006-07-01,6 2006-08-01,6 2006-09-01,6 2006-10-01,6 2006-11-01,6 2006-12-01,6 2007-01-01,6 2007-02-01,6 2007-03-01,6 2007-04-01,6 2007-05-01,6 2007-06-01,6 2007-07-01,6 2007-08-01,6 2007-09-01,6 2007-10-01,6 2007-11-01,6 2007-12-01,6 2008-01-01,6 2008-02-01,6 2008-03-01,6 2008-04-01,6 2008-05-01,6 2008-06-01,6 2008-06-01,6 2008-07-01,6 2008-08-01,6 2008-09-01,6 2008-10-01,6 2008-11-01,6 2008-12-01,5 2009-01-01,4 2009-02-01,4 2009-03-01,3.5 2009-04-01,3.25 2009-05-01,3.25 2009-06-01,3.25 2009-07-01,3.25 2009-08-01,3.25 2009-09-01,3.25 2009-10-01,3.25 2009-11-01,3.25 2009-12-01,3.25 2010-01-01,3.25 2010-02-01,3.25 2010-03-01,3.5 2010-04-01,3.75 2010-05-01,3.75 2010-06-01,3.75 2010-07-01,4 2010-07-01,4.5 2010-08-01,4.5 2010-09-01,5 2010-10-01,5 2010-11-01,5.25 2010-12-01,5.25 2011-01-01,5.5 2011-02-01,5.5 2011-03-01,5.75 2011-04-01,5.75 2011-05-01,6.25 2011-06-01,6.5 2011-07-01,7 2011-08-01,7 2011-09-01,7.25 2011-10-01,7.5 2011-11-01,7.5 2011-12-01,7.5 2012-01-01,7.5 2012-02-01,7.5 2012-03-01,7.5 2012-04-01,7 2012-05-01,7 2012-06-01,7 2012-07-01,7 2012-08-01,7 2012-09-01,7 2012-10-01,7 2012-11-01,7 2012-12-01,7 2013-01-01,6.75 2013-02-01,6.75 2013-03-01,6.5 2013-04-01,6.5 2013-05-01,6.25 2013-06-01,6.25 2013-07-01,6.25 2013-08-01,6.25 2013-09-01,6.5 2013-10-01,6.75 2013-11-01,6.75 2013-12-01,6.75 2014-01-01,7 2014-02-01,7 2014-03-01,7 2014-04-01,7 2014-05-01,7 2014-06-01,7 2014-07-01,7 2014-08-01,7 2014-09-01,7 2014-10-01,7 2014-11-01,7 2014-12-01,7 2015-01-01,6.75 2015-02-01,6.75 2015-03-01,6.5 2015-04-01,6.5 2015-05-01,6.5 2015-06-01,6.25 2015-07-01,6.25 2015-08-01,6.25 2015-09-01,5.75 2015-10-01,5.75 2015-11-01,5.75 2015-12-01,5.75 2016-01-01,5.75 2016-02-01,5.75 2016-03-01,5.75 2016-04-01,6 2016-05-01,6 2016-06-01,6 2016-07-01,6 2016-08-01,6 2016-09-01,6 2016-10-01,5.75 2016-11-01,5.75 2016-12-01,5.75 2017-01-01,5.75 2017-02-01,5.75 2017-03-01,5.75 2017-04-01,5.75 2017-05-01,5.75 2017-06-01,5.75 2017-07-01,5.75 2017-08-01,5.75 2017-09-01,5.75 2017-10-01,5.75 2017-11-01,5.75 2017-12-01,5.75 2018-01-01,5.75 2018-02-01,5.75 2018-03-01,5.75 2018-04-01,5.75 2018-05-01,5.75 2018-06-01,6 2018-07-01,6 2018-08-01,6.25 2018-09-01,6.25 2018-10-01,6.25 2018-11-01,6.25 2018-12-01,6.25 2019-01-01,6.25 2019-02-01,6 2019-03-01,6 2019-04-01,5.75 2019-05-01,5.75 2019-06-01,5.5 2019-07-01,5.5 2019-08-01,5.15 2019-09-01,5.15 2019-10-01,4.9 2019-11-01,4.9 2019-12-01,4.9 2020-01-01,4.9 2020-02-01,4.9 2020-03-01,4 2020-04-01,3.75 2020-05-01,3.35 2020-06-01,3.35 2020-07-01,3.35 2020-08-01,3.35 2020-09-01,3.35 2020-10-01,3.35 2020-11-01,3.35 2020-12-01,3.35 2021-01-01,3.35 2021-02-01,3.35 2021-03-01,3.35 2021-05-01,3.35 2022-05-01,3.35 2022-06-01,3.35 2022-08-01,3.35 2022-09-01,3.35 2022-12-01,3.35