| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | Aug | 50 |
| 2024 | Aug | 70 |
| 2024 | Apr | 100 |
| 2023 | May | 70 |
| 2023 | Apr | 100 |
| 2022 | May | 15 |
| 2022 | Mar | 85 |
| 2021 | Jun | 40 |
| 2021 | Mar | 30 |
| 2020 | Mar | 75 |
| 2019 | May | 30 |
| 2019 | Apr | 40 |
| 2018 | May | 20 |
| 2018 | May | 15 |
| 2017 | May | 15 |
| 2017 | Apr | 15 |
| 2016 | May | 10 |
| 2016 | Mar | 30 |
| 2015 | May | 15 |
| 2015 | Apr | 20 |
| 2014 | May | 8 |
| 2014 | Feb | 10 |
| 2013 | May | 12 |
| 2012 | May | 10 |
| 2011 | Jul | 15 |
| 2010 | Sep | 15 |
| 2009 | Sep | 20 |
| 2008 | Aug | 20 |
| 2007 | Jul | 20 |
| 2006 | Jun | 10 |
| 2000 | Oct | 10 |
| 1997 | Sep | 10 |