| Year | Protected | Not Protected | Protected % |
| 1998-99 | 0 | 8 | 0.00 |
| 1999-00 | 1 | 9 | 10.00 |
| 2000-01 | 1 | 11 | 8.33 |
| 2001-02 | 3 | 11 | 21.43 |
| 2002-03 | 6 | 9 | 40.00 |
| 2003-04 | 3 | 13 | 18.75 |
| 2004-05 | 0 | 17 | 0.00 |
| 2006-07 | 0 | 2 | 0.00 |
| 2007-08 | 0 | 2 | 0.00 |
| 2010-11 | 0 | 2 | 0.00 |
| 2011-12 | 0 | 2 | 0.00 |
| Totals | 14 | 86 | 14.00 |