| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 8 |
| 2024 | May | 10 |
| 2023 | May | 9 |
| 2022 | May | 9 |
| 2021 | Jun | 9 |
| 2020 | Aug | 8 |
| 2019 | May | 8 |
| 2018 | May | 8 |
| 2017 | Jun | 8 |
| 2016 | May | 8 |
| 2015 | Jun | 8 |
| 2014 | Jun | 8 |
| 2013 | May | 8 |
| 2012 | May | 8 |
| 2011 | May | 8 |
| 2010 | Jun | 8 |
| 2009 | Jul | 6 |
| 2008 | Jul | 6 |
| 2007 | Sep | 6 |
| 2006 | Sep | 5 |
| 1998 | Nov | - |
| 1996 | Oct | 10 |