| Value | Category |
|---|---|
| 1997-07-01 | |
| 1999-10-01 | |
| 2003-04-01 | |
| 2004-12-01 | |
| 2005-05-01 | |
| 2005-06-01 | |
| 2005-07-01 | |
| 2005-11-01 | |
| 2006-05-01 | |
| 2006-07-01 | |
| 2006-12-01 | |
| 2007-03-01 | |
| 2007-05-01 | |
| 2007-08-01 | |
| 2008-04-01 | |
| 2008-05-01 | |
| 2008-07-01 | |
| 2008-12-01 | |
| 2009-01-01 | |
| 2009-05-01 | |
| 2009-06-01 | |
| 2009-07-01 | |
| 2009-11-01 | |
| 2010-06-01 | |
| 2010-07-01 | |
| 2010-08-01 | |
| 2010-12-01 | |
| 2011-03-01 | |
| 2011-05-01 | |
| 2011-06-01 | |
| 2011-07-01 | |
| 2012-03-01 | |
| 2012-04-01 | |
| 2012-05-01 | |
| 2012-06-01 | |
| 2012-07-01 | |
| 2013-02-01 | |
| 2013-04-01 | |
| 2013-05-01 | |
| 2013-06-01 | |
| 2013-07-01 | |
| 2013-11-01 | |
| 2013-12-01 | |
| 2014-02-01 | |
| 2014-05-01 | |
| 2014-06-01 | |
| 2014-07-01 | |
| 2014-08-01 | |
| 2014-10-01 | |
| 2014-12-01 | |
| 2015-05-01 | |
| 2015-06-01 | |
| 2015-07-01 | |
| 2015-10-01 | |
| 2015-11-01 | |
| 2016-02-01 | |
| 2016-03-01 | |
| 2016-04-01 | |
| 2016-05-01 | |
| 2016-06-01 | |
| 2016-07-01 | |
| 2016-08-01 | |
| 2016-09-01 | |
| 2016-10-01 | |
| 2016-11-01 | |
| 2016-12-01 | |
| 2017-01-01 | |
| 2017-02-01 | |
| 2017-03-01 | |
| 2017-04-01 | |
| 2017-05-01 | |
| 2017-06-01 | |
| 2017-07-01 | |
| 2017-08-01 | |
| 2017-09-01 | |
| 2017-10-01 | |
| 2017-11-01 | |
| 2017-12-01 | |
| 2018-01-01 | |
| 2018-02-01 | |
| 2018-03-01 | |
| 2018-04-01 | |
| 2018-05-01 | |
| 2018-06-01 | |
| 2018-07-01 | |
| 2018-08-01 | |
| 2018-11-01 | |
| 2018-12-01 | |
| 2019-02-01 | |
| 2019-04-01 | |
| 2019-05-01 | |
| 2019-06-01 | |
| 2019-07-01 | |
| 2019-08-01 |
