| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 40 |
| 2024 | May | 80 |
| 2023 | May | 60 |
| 2022 | May | 60 |
| 2021 | Jun | 50 |
| 2020 | Mar | 50 |
| 2019 | May | 25 |
| 2019 | Feb | 25 |
| 2018 | May | 50 |
| 2017 | Nov | 50 |
| 2017 | May | 10 |
| 2016 | Aug | 50 |
| 2016 | Mar | 30 |
| 2015 | Nov | 30 |
| 2015 | May | 30 |
| 2014 | May | 20 |
| 2014 | Feb | 20 |
| 2013 | May | 30 |
| 2012 | May | 30 |
| 2011 | Apr | 30 |
| 2010 | May | 15 |
| 2009 | May | 15 |
| 2008 | May | 50 |
| 2007 | May | 30 |
| 2005 | May | 30 |
| 2004 | May | 45 |
| 2003 | May | 40 |
| 2002 | Jul | 45 |
| 2001 | Jun | 40 |
| 2000 | May | 40 |
| 1999 | Aug | 40 |