| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 20 |
| 2024 | Mar | 20 |
| 2023 | May | 15 |
| 2021 | May | 15 |
| 2020 | Mar | 10 |
| 2019 | May | 10 |
| 2018 | May | 20 |
| 2017 | May | 20 |
| 2016 | Mar | 10 |
| 2016 | Feb | 10 |
| 2015 | May | 15 |
| 2014 | Jun | 10 |
| 2013 | May | 10 |
| 2012 | May | 10 |
| 2011 | Aug | 10 |
| 2010 | Jun | 10 |
| 2000 | May | 20 |
| 1999 | Aug | 25 |
| 1998 | Jul | 10 |
| 1998 | Mar | 15 |