| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 50 |
| 2024 | May | 100 |
| 2023 | May | 125 |
| 2022 | May | 75 |
| 2021 | May | 50 |
| 2011 | May | 10 |
| 2010 | May | 10 |
| 2009 | Jun | 5 |
| 2008 | May | 10 |
| 2007 | Jun | 10 |
| 2006 | Jun | 20 |
| 2005 | May | 25 |
| 2004 | May | 35 |
| 2003 | Jun | 25 |
| 2002 | Jun | 25 |
| 2001 | May | 30 |
| 2000 | Sep | 10 |
| 2000 | Mar | 15 |
| 1999 | May | 25 |