| Year | Month | Dividend (%) |
|---|---|---|
| 2025 | May | 7,000 |
| 2024 | May | 5,100 |
| 2023 | May | 3,700 |
| 2022 | May | 2,100 |
| 2021 | May | 1,700 |
| 2020 | Mar | 1,250 |
| 2019 | May | 1,250 |
| 2018 | May | 1,100 |
| 2017 | May | 1,000 |
| 2016 | Mar | 1,000 |
| 2015 | Feb | 500 |
| 2014 | Feb | 300 |
| 2013 | Feb | 200 |
| 2012 | Feb | 160 |
| 2011 | Feb | 110 |
| 2010 | Feb | 70 |
| 2009 | Mar | 50 |
| 2008 | Apr | 50 |
| 2007 | Mar | 290 |
| 2006 | May | 40 |
| 2005 | Jun | 40 |
| 2004 | Aug | 35 |
| 2003 | May | 35 |
| 2002 | May | 25 |
| 2001 | May | 20 |
| 2000 | Apr | 20 |
| 1999 | May | 15 |
| 1998 | Jun | 10 |
| 1997 | May | 10 |