| Type | Filed | |
|---|---|---|
| 4 | 2012-04-23 | EDGAR |
| 4 | 2012-04-02 | EDGAR |
| 4 | 2012-03-22 | EDGAR |
| 4 | 2012-02-01 | EDGAR |
| 4 | 2012-01-23 | EDGAR |
| 4 | 2011-12-20 | EDGAR |
| 4 | 2011-12-13 | EDGAR |
| 4 | 2011-12-06 | EDGAR |
| 4 | 2011-12-05 | EDGAR |
| 4 | 2011-11-25 | EDGAR |
| 4 | 2011-11-22 | EDGAR |
| 4 | 2011-11-16 | EDGAR |
| 4 | 2011-11-14 | EDGAR |
| 4 | 2011-11-10 | EDGAR |
| 4 | 2011-11-09 | EDGAR |
| 4 | 2011-11-08 | EDGAR |
| 4 | 2011-11-04 | EDGAR |
| 4 | 2011-10-28 | EDGAR |
| 4 | 2011-10-26 | EDGAR |
| 4 | 2011-10-25 | EDGAR |