| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 30 |
| 2024 | May | 20 |
| 2024 | May | 30 |
| 2023 | May | 20 |
| 2022 | May | 10 |
| 2021 | Jun | 30 |
| 2020 | Feb | 30 |
| 2019 | May | 30 |
| 2018 | May | 30 |
| 2017 | Sep | 25 |
| 2016 | May | 18 |
| 2015 | Jun | 15 |
| 2014 | Jun | 12 |
| 2013 | May | 12 |
| 2010 | Aug | 25 |
| 2009 | Jul | 25 |
| 2005 | Aug | 25 |
| 2004 | Aug | 25 |
| 2002 | Aug | 25 |
| 2001 | Aug | 30 |
| 2000 | Aug | 28 |
| 1999 | Aug | 25 |
| 1998 | Aug | 25 |
| 1997 | Aug | 22 |