| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 25 |
| 2024 | May | 10 |
| 2023 | May | 10 |
| 2022 | May | 50 |
| 2021 | Jun | 25 |
| 2020 | Mar | 20 |
| 2019 | May | 20 |
| 2018 | May | 20 |
| 2017 | Jul | 20 |
| 2016 | May | 20 |
| 2015 | May | 20 |
| 2014 | May | 20 |
| 2013 | Jun | 20 |
| 2012 | May | 20 |
| 2011 | Jun | 20 |
| 2010 | May | 20 |
| 2009 | May | 20 |
| 2008 | Feb | 100 |
| 1999 | Sep | 20 |
| 1998 | Sep | 20 |
| 1997 | Sep | 20 |