| Year | Ratio | Ex Right Date |
| 2009 | 7:13 | Feb 03, 2010 |
| 2005 | 14:10 | Jun 14, 2005 |
| 1993 | 1:4 | Feb 05, 1993 |
| 1992 | 1:2 | Feb 05, 1993 |
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