| Year | Ratio | Ex Right Date |
| 2004 | 4:10 | Nov 25, 2004 |
| 2000 | 30:100 | Apr 10, 2000 |
| 2000 | 30:100 | Apr 10, 2000 |
| 1994 | 1:1 | May 20, 2004 |
| 1991 | 2:1 | Jan 10, 1992 |
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