| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 4 |
| 2024 | Sep | 12 |
| 2023 | May | 10 |
| 2022 | May | 8 |
| 2021 | Jul | 5 |
| 2019 | Jun | 12 |
| 2018 | May | 12 |
| 2016 | Jun | 10 |
| 2015 | Jun | 10 |
| 2014 | Jun | 10 |
| 2013 | Jun | 9 |
| 2012 | Jul | 8 |
| 2011 | Sep | 8 |
| 2010 | Sep | 8 |
| 2009 | Sep | 7 |
| 2008 | Sep | 7 |
| 2007 | Sep | 7 |
| 2006 | Aug | 6 |
| 2005 | Oct | 5 |
| 2002 | Aug | - |
| 1999 | Jul | - |
| 1997 | Jul | 10 |