| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 120 |
| 2024 | May | 100 |
| 2023 | May | 100 |
| 2022 | May | 100 |
| 2021 | May | 100 |
| 2020 | Mar | 100 |
| 2019 | May | 100 |
| 2018 | May | 20 |
| 2017 | May | 10 |
| 2012 | Jun | 15 |
| 2011 | Nov | 85 |
| 2010 | Nov | 15 |
| 2010 | Aug | 15 |
| 2009 | Nov | 10 |
| 2005 | Aug | 10 |
| 2004 | Jun | 10 |
| 2002 | Nov | - |
| 2001 | Aug | - |
| 1997 | May | 20 |