| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 100 |
| 2024 | May | 60 |
| 2022 | May | 20 |
| 2021 | Jun | 20 |
| 2020 | Jun | 40 |
| 2019 | May | 20 |
| 2014 | May | 10 |
| 2013 | May | 80 |
| 2012 | May | 80 |
| 2011 | Jun | 75 |
| 2010 | Jun | 70 |
| 2009 | Jun | 100 |
| 2008 | Jun | 100 |
| 2007 | Jun | 100 |
| 2006 | Jun | 70 |
| 2005 | Jun | 40 |
| 2004 | Jun | 25 |
| 2003 | Jun | 20 |
| 2002 | Jun | 10 |
| 1999 | Jun | - |
| 1998 | Jun | 30 |
| 1997 | Jul | 30 |