| Year | Protected | Not Protected | Protected % |
| 1998-99 | 8 | 0 | 100.00 |
| 1999-00 | 10 | 0 | 100.00 |
| 2000-01 | 12 | 0 | 100.00 |
| 2001-02 | 12 | 2 | 85.71 |
| 2002-03 | 13 | 2 | 86.67 |
| 2003-04 | 8 | 8 | 50.00 |
| 2004-05 | 11 | 6 | 64.71 |
| 2006-07 | 0 | 2 | 0.00 |
| 2007-08 | 0 | 2 | 0.00 |
| 2010-11 | 0 | 2 | 0.00 |
| 2011-12 | 0 | 2 | 0.00 |
| 2012-13 | 0 | 2 | 0.00 |
| Totals | 74 | 28 | 72.55 |