| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 170 |
| 2024 | Apr | 10 |
| 2023 | Apr | 10 |
| 2022 | May | 15 |
| 2021 | May | 15 |
| 2020 | Mar | 100 |
| 2019 | May | 30 |
| 2018 | May | 65 |
| 2017 | Apr | 65 |
| 2016 | Apr | 5 |
| 2016 | Mar | 60 |
| 2015 | Oct | 65 |
| 2015 | Apr | 75 |
| 2014 | Nov | 30 |
| 2014 | May | 30 |
| 2013 | May | 20 |
| 2012 | Nov | 20 |
| 2010 | May | 10 |
| 2002 | Aug | - |
| 1997 | May | 15 |