| Year | Protected | Not Protected | Protected % |
| 1998-99 | 7 | 1 | 87.50 |
| 1999-00 | 8 | 2 | 80.00 |
| 2000-01 | 10 | 2 | 83.33 |
| 2001-02 | 10 | 4 | 71.43 |
| 2002-03 | 3 | 12 | 20.00 |
| 2003-04 | 0 | 16 | 0.00 |
| 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 | 38 | 62 | 38.00 |