| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 210 |
| 2024 | May | 15 |
| 2023 | May | 15 |
| 2022 | May | 13 |
| 2019 | Aug | 13 |
| 2018 | May | 13 |
| 2017 | May | 13 |
| 2016 | May | 13 |
| 2015 | Jun | 10 |
| 2014 | May | 10 |
| 2013 | May | 15 |
| 2012 | May | 15 |
| 2011 | Jul | 15 |
| 2010 | May | 15 |
| 2009 | Jul | 12 |
| 2008 | Jul | 12 |
| 2007 | Jul | 12 |
| 2006 | Jun | 10 |
| 2005 | Sep | 5 |
| 1999 | Feb | 13 |
| 1997 | Apr | 10 |