| Year | Ratio | Ex Right Date |
| 2016 | 1:2 | Oct 24, 2016 |
| 2010 | 2:5 | Feb 25, 2011 |
| 2004 | 2:1 | Jan 13, 2005 |
| 2002 | 1:2 | Jan 30, 2003 |
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