| Year | Ratio | Ex Right Date |
| 2012 | 2:3 | Feb 15, 2013 |
| 2009 | 83:40 | Mar 18, 2009 |
| 2001 | 1:5 | Feb 26, 2001 |
| 1996 | 2:1 | Dec 09, 1996 |
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