| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 40 |
| 2024 | May | 50 |
| 2023 | May | 100 |
| 2022 | May | 100 |
| 2022 | May | 100 |
| 2021 | Jun | 100 |
| 2020 | Mar | 200 |
| 2019 | Sep | 100 |
| 2018 | May | 100 |
| 2017 | May | 100 |
| 2016 | Mar | 50 |
| 2015 | Aug | 30 |
| 2014 | Aug | 50 |
| 2013 | Aug | 60 |
| 2012 | Aug | 70 |
| 2011 | Jul | 55 |
| 2010 | Aug | 50 |
| 2009 | Jul | 60 |
| 2008 | Jul | 50 |
| 2007 | Aug | 60 |
| 2005 | Jul | 60 |
| 2004 | Jul | 40 |
| 2001 | Jul | 25 |
| 2000 | Aug | 6 |
| 2000 | Mar | 12 |