| Year | Ratio | Ex Right Date |
| 2019 | 11:83 | Dec 30, 2019 |
| 2017 | 1:23 | Jan 31, 2018 |
| 2005 | 1:10 | Jun 24, 2005 |
| 1991 | 25:100 | Nov 18, 1991 |
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