| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 200 |
| 2024 | May | 200 |
| 2023 | May | 100 |
| 2022 | May | 100 |
| 2021 | Jun | 70 |
| 2020 | Aug | 50 |
| 2019 | May | 120 |
| 2018 | May | 120 |
| 2017 | Jun | 100 |
| 2016 | May | 50 |
| 2015 | May | 100 |
| 2014 | May | 120 |
| 2013 | May | 120 |
| 2012 | Aug | 120 |
| 2011 | Aug | 120 |
| 2010 | Sep | 120 |
| 2009 | Aug | 100 |
| 2008 | Aug | 100 |
| 2007 | Sep | 30 |
| 2007 | Mar | 50 |
| 2006 | Aug | 30 |
| 2006 | Aug | 70 |
| 2005 | Jun | 50 |
| 2004 | Jul | 15 |
| 2004 | May | 25 |
| 2003 | Jul | 35 |
| 2001 | Aug | 15 |
| 2000 | Apr | 12 |
| 1999 | Sep | 12 |
| 1998 | Aug | 10 |
| 1997 | Aug | 10 |