| Year | Protected | Not Protected | Protected % |
| 2012 | 0 | 33 | 0.00 |
| 2013 | 0 | 33 | 0.00 |
| 2014 | 31 | 3 | 91.18 |
| 2015 | 5 | 29 | 14.71 |
| 2016 | 1 | 34 | 2.86 |
| 2017 | 34 | 2 | 94.44 |
| 2018 | 36 | 1 | 97.30 |
| 2019 | 35 | 3 | 92.11 |
| 2020 | 4 | 35 | 10.26 |
| 2021 | 0 | 30 | 0.00 |
| 2022 | 0 | 41 | 0.00 |
| 2023 | 0 | 42 | 0.00 |
| 2024 | 0 | 42 | 0.00 |
| Totals | 146 | 328 | 30.80 |