| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 75 |
| 2025 | May | 45 |
| 2024 | May | 80 |
| 2024 | May | 40 |
| 2023 | May | 75 |
| 2023 | May | 45 |
| 2022 | Feb | 100 |
| 2022 | Feb | 35 |
| 2021 | Mar | 30 |
| 2020 | Feb | 75 |
| 2020 | Feb | 25 |
| 2019 | Feb | 15 |
| 2018 | Feb | 10 |
| 2017 | Feb | 8 |
| 2016 | Feb | 8 |
| 2015 | Feb | 15 |
| 2014 | Feb | 15 |
| 2013 | Feb | 15 |
| 2012 | Feb | 15 |
| 2011 | Feb | 15 |
| 2010 | Feb | 15 |
| 2009 | Feb | 15 |
| 2008 | Feb | 20 |
| 2007 | May | 25 |
| 2006 | May | 30 |
| 2005 | May | 15 |
| 2004 | May | 10 |
| 2001 | Jun | - |
| 1998 | Nov | - |
| 1997 | Dec | 20 |