| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 150 |
| 2024 | May | 150 |
| 2023 | May | 150 |
| 2022 | May | 150 |
| 2021 | Mar | 120 |
| 2020 | Mar | 100 |
| 2019 | May | 100 |
| 2018 | May | 135 |
| 2017 | May | 135 |
| 2016 | May | 115 |
| 2015 | May | 100 |
| 2014 | May | 75 |
| 2013 | May | 60 |
| 2012 | May | 40 |
| 2011 | May | 35 |
| 2010 | May | 30 |
| 2009 | May | 15 |
| 2008 | May | 10 |
| 2002 | May | 10 |
| 2001 | May | 10 |
| 2000 | Apr | 17 |
| 1999 | May | 16 |