| Year | Ratio | Ex Right Date |
| 2010 | 1:1 | Oct 19, 2010 |
| 1995 | 7:10 | Dec 04, 1995 |
| 1992 | 1:2 | Feb 26, 1993 |
| 1992 | 1:6 | Feb 26, 1993 |
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