| Year | Ratio | Ex Right Date |
| 2017 | 2:25 | Jan 31, 2018 |
| 2017 | 4:25 | Jan 31, 2018 |
| 2007 | 1:5 | Oct 29, 2007 |
| 1992 | 2:5 | Apr 20, 1992 |
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