| Year | Month | Dividend (%) |
|---|---|---|
| 2024 | May | 25 |
| 2023 | May | 80 |
| 2022 | May | 50 |
| 2019 | Jun | 25 |
| 2018 | May | 50 |
| 2017 | May | 25 |
| 2016 | Nov | 75 |
| 2016 | Mar | 100 |
| 2015 | Oct | 75 |
| 2015 | Mar | 85 |
| 2014 | Oct | 50 |
| 2014 | May | 50 |
| 2013 | Oct | 50 |
| 2013 | May | 50 |
| 2012 | Nov | 30 |
| 2012 | May | 30 |
| 2011 | May | 30 |
| 2007 | Jun | 5 |
| 2006 | May | 5 |
| 2005 | Jun | 5 |
| 2004 | Jun | 5 |
| 2003 | Jun | 5 |
| 2002 | Jul | 5 |
| 2001 | Aug | 8 |
| 2000 | Aug | 12 |
| 1999 | Aug | 12 |
| 1998 | Jun | 18 |
| 1997 | Jun | 16 |