| Year | Month | Dividend (%) |
|---|---|---|
| 2024 | May | 25 |
| 2023 | May | 50 |
| 2022 | May | 25 |
| 2021 | May | 20 |
| 2020 | Jun | 10 |
| 2017 | Sep | 20 |
| 2016 | May | 25 |
| 2013 | May | 20 |
| 2012 | May | 25 |
| 2009 | Jun | 25 |
| 2008 | May | 20 |
| 2006 | Dec | 20 |
| 2006 | Jan | 20 |
| 2005 | Jan | 30 |
| 2003 | Jan | 10 |
| 2001 | Dec | 35 |
| 2001 | Feb | 30 |
| 2000 | Feb | 25 |
| 1999 | Jan | - |
| 1998 | Jan | 23 |
| 1997 | Jan | 23 |