| From Date | DA % |
| 01-07-2006 | 2 |
| 01-01-2007 | 6 |
| 01-07-2007 | 9 |
| 01-01-2008 | 12 |
| 01-07-2008 | 16 |
| 01-01-2009 | 22 |
| 01-07-2009 | 27 |
| 01-01-2010 | 35 |
| 01-07-2010 | 45 |
| 01-01-2011 | 51 |
| 01-07-2011 | 58 |
| 01-01-2012 | 65 |
| 01-07-2012 | 72 |
| 01-01-2013 | 80 |
| 01-07-2013 | 90 |
| 01-01-2014 | 100 |
| 01-07-2014 | 107 |