| Year | Month | Dividend (%) |
|---|---|---|
| 2024 | May | 11 |
| 2023 | May | 5 |
| 2023 | May | 16 |
| 2022 | May | 15 |
| 2022 | May | 35 |
| 2018 | May | 5 |
| 2018 | May | 15 |
| 2017 | May | 15 |
| 2016 | Apr | 15 |
| 2015 | May | 15 |
| 2014 | May | 15 |
| 2013 | May | 15 |
| 2012 | Apr | 15 |
| 2011 | Jun | 15 |
| 2010 | May | 15 |
| 2009 | Jun | 10 |
| 2008 | Sep | 10 |
| 2007 | Dec | 15 |
| 2006 | Jun | 6 |
| 2005 | Dec | 13 |
| 2004 | Dec | 13 |
| 1999 | May | - |
| 1997 | Dec | 10 |