| Year | Protected | Not Protected | Protected % |
| 2013 | 32 | 1 | 96.97 |
| 2014 | 34 | 0 | 100.00 |
| 2015 | 30 | 4 | 88.24 |
| 2016 | 25 | 10 | 71.43 |
| 2017 | 36 | 0 | 100.00 |
| 2018 | 32 | 5 | 86.49 |
| 2019 | 16 | 22 | 42.11 |
| 2020 | 0 | 39 | 0.00 |
| 2021 | 4 | 26 | 13.33 |
| 2022 | 0 | 41 | 0.00 |
| 2023 | 0 | 42 | 0.00 |
| 2024 | 0 | 42 | 0.00 |
| 2025 | 0 | 42 | 0.00 |
| Totals | 209 | 274 | 43.27 |