| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 10 |
| 2024 | May | 10 |
| 2023 | May | 10 |
| 2022 | May | 10 |
| 2021 | Jun | 10 |
| 2020 | Aug | 5 |
| 2019 | Aug | 5 |
| 2018 | May | 5 |
| 2017 | Jun | 5 |
| 2016 | Jun | 5 |
| 2015 | Jun | 5 |
| 2014 | Sep | 5 |
| 2013 | May | 5 |
| 2012 | Jul | 5 |
| 2011 | Sep | 5 |
| 2010 | Aug | 5 |
| 2009 | Sep | 5 |
| 2008 | Nov | 5 |
| 2008 | Mar | 5 |
| 2006 | Sep | 16 |
| 2005 | Sep | 22 |
| 2004 | Aug | 11 |
| 2003 | Aug | 11 |
| 2002 | Aug | 15 |
| 2001 | Aug | 5 |
| 2000 | Oct | 5 |
| 1998 | May | 16 |
| 1997 | Jun | 15 |