| Year | Protected | Not Protected | Protected % |
| 2006 | 0 | 36 | 0.00 |
| 2004 | 44 | 0 | 100.00 |
| 2009 | 0 | 34 | 0.00 |
| 2007 | 0 | 33 | 0.00 |
| 2008 | 0 | 34 | 0.00 |
| 1998 | 15 | 0 | 100.00 |
| 2001 | 33 | 0 | 100.00 |
| 2003 | 42 | 0 | 100.00 |
| 2002 | 38 | 0 | 100.00 |
| 2000 | 28 | 0 | 100.00 |
| 2005 | 26 | 19 | 57.78 |
| 1999 | 22 | 0 | 100.00 |
| Totals | 248 | 156 | 61.39 |