| Year | Ratio | Ex Bonus Date |
| 2022 | 3:10 | Nov 25, 2022 |
| 2009 | 1:2 | Jul 29, 2009 |
| 2008 | 14:10 | Nov 12, 2008 |
| 2007 | 9:5 | Mar 17, 2008 |
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