| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 10 |
| 2024 | May | 10 |
| 2023 | Aug | 10 |
| 2022 | May | 20 |
| 2021 | Jun | 20 |
| 2020 | Feb | 15 |
| 2019 | May | 15 |
| 2018 | May | 10 |
| 2017 | Aug | 20 |
| 2016 | Mar | 20 |
| 2015 | May | 20 |
| 2014 | May | 20 |
| 2013 | May | 20 |
| 2012 | May | 20 |
| 2011 | Aug | 20 |
| 2010 | Aug | 20 |
| 2009 | Aug | 10 |
| 2008 | Aug | 12 |
| 2007 | Mar | 15 |
| 2006 | Jul | 10 |
| 2005 | Jan | 25 |
| 2004 | Aug | 20 |
| 2002 | Aug | - |
| 2001 | Jul | 20 |
| 2000 | Apr | 15 |
| 1999 | Jul | 15 |
| 1998 | Aug | 10 |
| 1997 | Nov | 15 |
| 1997 | Jun | 20 |