| Year | Protected | Not Protected | Protected % |
| 1998-99 | 0 | 8 | 0.00 |
| 1999-00 | 2 | 8 | 20.00 |
| 2000-01 | 7 | 5 | 58.33 |
| 2001-02 | 11 | 3 | 78.57 |
| 2002-03 | 1 | 14 | 6.67 |
| 2003-04 | 2 | 14 | 12.50 |
| 2004-05 | 3 | 14 | 17.65 |
| 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 |
| 2013-14 | 0 | 2 | 0.00 |
| 2014-15 | 0 | 2 | 0.00 |
| Totals | 26 | 80 | 24.53 |