| Year | Month | Dividend (%) |
|---|---|---|
| 2026 | Feb | 35 |
| 2025 | May | 40 |
| 2025 | Feb | 30 |
| 2024 | May | 50 |
| 2024 | Feb | 30 |
| 2023 | May | 60 |
| 2023 | Feb | 40 |
| 2022 | May | 60 |
| 2022 | Feb | 40 |
| 2021 | Jun | 40 |
| 2021 | Feb | 30 |
| 2020 | Jul | 35 |
| 2020 | Feb | 25 |
| 2019 | May | 20 |
| 2019 | Feb | 20 |
| 2018 | May | 20 |
| 2018 | Feb | 20 |
| 2017 | May | 20 |
| 2017 | Feb | 20 |
| 2016 | May | 20 |
| 2016 | Jan | 20 |
| 2015 | May | 30 |
| 2015 | Jan | 20 |
| 2014 | May | 45 |
| 2014 | Jan | 30 |
| 2013 | May | 75 |
| 2013 | Jan | 50 |
| 2012 | May | 50 |
| 2012 | Mar | 50 |
| 2012 | Jan | 25 |
| 2011 | Jul | 50 |
| 2010 | Jul | 30 |
| 2009 | Jul | 30 |
| 2008 | Jun | 35 |
| 2007 | Jun | 30 |
| 2006 | Aug | 50 |
| 2005 | Jun | 40 |
| 2004 | Jun | 10 |
| 2001 | Jul | 20 |
| 2000 | May | 90 |
| 1999 | Jun | 25 |
| 1997 | Jun | 10 |