| Year | Protected | Not Protected | Protected % |
| 2008 | 0 | 31 | 0.00 |
| 2009 | 15 | 17 | 46.88 |
| 2010 | 31 | 1 | 96.88 |
| 2011 | 32 | 0 | 100.00 |
| 2012 | 22 | 11 | 66.67 |
| 2013 | 8 | 25 | 24.24 |
| 2014 | 0 | 34 | 0.00 |
| 2015 | 0 | 34 | 0.00 |
| 2016 | 0 | 35 | 0.00 |
| 2017 | 0 | 36 | 0.00 |
| 2018 | 0 | 37 | 0.00 |
| 2019 | 0 | 38 | 0.00 |
| 2020 | 0 | 39 | 0.00 |
| Totals | 108 | 338 | 24.22 |