| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 35 |
| 2024 | May | 70 |
| 2023 | May | 60 |
| 2022 | May | 100 |
| 2021 | May | 45 |
| 2020 | Mar | 40 |
| 2019 | May | 40 |
| 2018 | May | 37 |
| 2017 | May | 33 |
| 2016 | Mar | 30 |
| 2015 | Nov | 60 |
| 2015 | May | 30 |
| 2014 | May | 30 |
| 2013 | May | 29 |
| 2012 | Jul | 24 |
| 2011 | Jul | 22 |
| 2010 | Aug | 18 |
| 2009 | Jul | 35 |
| 2008 | Aug | 35 |
| 2007 | Jul | 33 |
| 2006 | Jun | 33 |
| 2005 | Jul | 27 |
| 2004 | Jun | 24 |
| 2003 | Jun | 21 |
| 2002 | Jul | 18 |
| 2000 | Jul | - |
| 2000 | Feb | 12 |
| 1999 | Aug | 15 |