| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 15 |
| 2024 | May | 15 |
| 2023 | May | 15 |
| 2022 | May | 15 |
| 2021 | Jul | 15 |
| 2020 | Jul | 15 |
| 2019 | May | 15 |
| 2018 | May | 15 |
| 2017 | Jun | 15 |
| 2016 | Jun | 12 |
| 2015 | May | 15 |
| 2014 | Jun | 10 |
| 2012 | Aug | 12 |
| 2011 | Aug | 12 |
| 2010 | Jul | 18 |
| 2009 | Aug | 10 |
| 2008 | Sep | 10 |
| 2002 | Sep | - |
| 2002 | Mar | - |
| 2001 | Aug | 21 |
| 2000 | Aug | - |
| 2000 | Apr | 21 |
| 1999 | Aug | 21 |
| 1998 | Aug | 20 |
| 1997 | Aug | 18 |