| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 340 |
| 2024 | May | 340 |
| 2023 | May | 290 |
| 2022 | May | 240 |
| 2021 | May | 190 |
| 2020 | May | 150 |
| 2019 | May | 120 |
| 2018 | May | 100 |
| 2017 | May | 80 |
| 2016 | Mar | 130 |
| 2015 | May | 130 |
| 2014 | May | 130 |
| 2013 | May | 130 |
| 2012 | May | 130 |
| 2011 | May | 120 |
| 2010 | May | 120 |
| 2009 | Mar | 80 |
| 2008 | Mar | 80 |
| 2007 | Dec | 80 |
| 2007 | Mar | 70 |
| 2006 | Mar | 110 |
| 2005 | Mar | 100 |
| 2004 | Mar | 65 |
| 2003 | Feb | 60 |
| 2002 | Feb | 30 |
| 2000 | Jul | - |
| 2000 | Mar | 35 |
| 1999 | May | 30 |
| 1998 | May | 30 |
| 1997 | Jun | 35 |