| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 300 |
| 2024 | May | 50 |
| 2023 | May | 500 |
| 2022 | May | 500 |
| 2021 | May | 500 |
| 2020 | May | 300 |
| 2019 | May | 400 |
| 2018 | Apr | 400 |
| 2017 | Jun | 350 |
| 2016 | Apr | 250 |
| 2015 | Apr | 250 |
| 2014 | Apr | 200 |
| 2013 | Apr | 125 |
| 2012 | Apr | 25 |
| 2012 | Mar | 100 |
| 2011 | Apr | 100 |
| 2010 | Apr | 100 |
| 2009 | Apr | 75 |
| 2008 | May | 100 |
| 2007 | Mar | 60 |
| 2006 | Apr | 50 |
| 2005 | Apr | 40 |
| 2004 | May | 30 |
| 1999 | Jun | - |
| 1997 | Jul | 5 |