| Year | Month | Dividend (%) |
|---|---|---|
| 2022 | May | 10 |
| 2021 | Jun | 10 |
| 2018 | Aug | 5 |
| 2017 | May | 5 |
| 2016 | Jun | 5 |
| 2015 | Feb | 5 |
| 2014 | Mar | 5 |
| 2013 | Mar | 5 |
| 2012 | May | 10 |
| 2011 | May | 15 |
| 2010 | Mar | 10 |
| 2009 | Mar | 5 |
| 2007 | Jul | 5 |
| 2006 | Apr | 5 |
| 2001 | May | 10 |
| 2000 | Aug | - |
| 2000 | Apr | 15 |
| 1999 | Aug | 23 |
| 1998 | Nov | 20 |
| 1998 | Mar | 10 |
| 1997 | Aug | 25 |