| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 40 |
| 2024 | May | 50 |
| 2023 | Apr | 50 |
| 2022 | Jun | 25 |
| 2021 | Jul | 40 |
| 2020 | Jul | 20 |
| 2019 | May | 25 |
| 2018 | Feb | 35 |
| 2017 | May | 20 |
| 2016 | Mar | 30 |
| 2015 | Jun | 20 |
| 2014 | May | 10 |
| 2014 | Mar | 10 |
| 2013 | Mar | 10 |
| 2012 | Mar | 10 |
| 2010 | Nov | 15 |
| 2010 | Feb | 20 |
| 2009 | Mar | 10 |
| 2008 | Jul | 10 |
| 2007 | Mar | 20 |
| 2006 | Jul | 20 |
| 2006 | Feb | 30 |
| 2005 | Sep | 20 |
| 2005 | Mar | 10 |
| 2004 | Feb | 5 |
| 2001 | Jul | 10 |
| 2000 | Apr | - |