| Year | Protected | Not Protected | Protected % |
| 2010 | 0 | 32 | 0.00 |
| 2011 | 3 | 29 | 9.38 |
| 2012 | 0 | 33 | 0.00 |
| 2013 | 32 | 1 | 96.97 |
| 2014 | 34 | 0 | 100.00 |
| 2015 | 34 | 0 | 100.00 |
| 2016 | 23 | 12 | 65.71 |
| 2017 | 36 | 0 | 100.00 |
| 2018 | 2 | 35 | 5.41 |
| 2019 | 0 | 38 | 0.00 |
| 2020 | 0 | 39 | 0.00 |
| 2021 | 0 | 30 | 0.00 |
| 2022 | 0 | 41 | 0.00 |
| Totals | 164 | 290 | 36.12 |