| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 50 |
| 2024 | May | 50 |
| 2023 | May | 25 |
| 2022 | May | 15 |
| 2021 | Jun | 20 |
| 2020 | Feb | 15 |
| 2019 | May | 20 |
| 2019 | Feb | 15 |
| 2018 | May | 20 |
| 2018 | Feb | 15 |
| 2017 | Aug | 13 |
| 2017 | Feb | 13 |
| 2016 | May | 15 |
| 2016 | Feb | 15 |
| 2015 | Aug | 15 |
| 2015 | Feb | 10 |
| 2014 | May | 15 |
| 2014 | Feb | 10 |
| 2013 | May | 15 |
| 2013 | Feb | 10 |
| 2012 | May | 25 |
| 2012 | Feb | 20 |
| 2011 | May | 25 |
| 2011 | Mar | 15 |
| 2010 | May | 45 |
| 2009 | May | 15 |
| 2008 | Jun | 30 |
| 2007 | Jun | 10 |
| 2007 | Mar | 15 |
| 2006 | Jul | 25 |
| 2005 | May | 13 |
| 2005 | Jan | 25 |
| 2004 | May | 25 |
| 2004 | Jan | 20 |
| 2003 | May | 40 |
| 2002 | May | 20 |
| 2001 | Oct | 12 |
| 2001 | May | 17 |
| 2000 | Nov | 10 |
| 2000 | May | 30 |
| 2000 | Jan | 15 |
| 1999 | Jul | 28 |
| 1998 | Jul | 18 |