| Type | Filed | |
|---|---|---|
| DEF 14A | 2018-11-08 | EDGAR |
| DEF 14A | 2018-07-17 | EDGAR |
| DEF 14A | 2017-12-19 | EDGAR |
| DEF 14A | 2016-11-02 | EDGAR |
| DEF 14A | 2015-11-13 | EDGAR |
| DEF 14A | 2015-08-12 | EDGAR |
| DEF 14A | 2014-07-24 | EDGAR |
| DEF 14A | 2013-06-18 | EDGAR |
| DEF 14A | 2011-04-28 | EDGAR |
| DEF 14A | 2010-04-23 | EDGAR |
| DEF 14A | 2009-11-23 | EDGAR |
| DEF 14A | 2009-04-22 | EDGAR |
| DEF 14A | 2008-04-07 | EDGAR |
| DEF 14A | 2007-04-23 | EDGAR |
| DEF 14A | 2007-03-02 | EDGAR |
| DEF 14A | 2006-05-01 | EDGAR |