| Year | Protected | Not Protected | Protected % |
| 2006 | 0 | 36 | 0.00 |
| 2004 | 14 | 30 | 31.82 |
| 2009 | 0 | 34 | 0.00 |
| 2007 | 0 | 33 | 0.00 |
| 2008 | 0 | 34 | 0.00 |
| 1998 | 15 | 0 | 100.00 |
| 2001 | 5 | 28 | 15.15 |
| 2003 | 32 | 10 | 76.19 |
| 2002 | 38 | 0 | 100.00 |
| 2000 | 21 | 7 | 75.00 |
| 2005 | 0 | 45 | 0.00 |
| 1999 | 22 | 0 | 100.00 |
| Totals | 147 | 257 | 36.39 |