| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 10 |
| 2024 | Aug | 10 |
| 2023 | Aug | 10 |
| 2022 | Aug | 10 |
| 2021 | Jun | 10 |
| 2020 | Jun | 10 |
| 2019 | May | 10 |
| 2018 | May | 25 |
| 2017 | May | 10 |
| 2016 | May | 10 |
| 2015 | May | 10 |
| 2014 | May | 10 |
| 2013 | May | 15 |
| 2012 | Aug | 15 |
| 2011 | Sep | 15 |
| 2010 | Aug | 15 |
| 2009 | Jun | 10 |
| 2008 | Aug | 10 |
| 2002 | Aug | - |
| 2001 | Aug | - |
| 1998 | Sep | 4 |
| 1997 | Oct | 6 |