| Year | Protected | Not Protected | Protected % |
| 2006 | 0 | 36 | 0.00 |
| 2004 | 1 | 43 | 2.27 |
| 2009 | 0 | 34 | 0.00 |
| 2007 | 0 | 33 | 0.00 |
| 2008 | 0 | 34 | 0.00 |
| 1998 | 14 | 1 | 93.33 |
| 2001 | 19 | 14 | 57.58 |
| 2003 | 10 | 32 | 23.81 |
| 2010 | 0 | 33 | 0.00 |
| 2002 | 21 | 17 | 55.26 |
| 2000 | 27 | 1 | 96.43 |
| 2005 | 0 | 45 | 0.00 |
| 1999 | 21 | 1 | 95.45 |
| Totals | 113 | 324 | 25.86 |