| Year | Protected | Not Protected | Protected % |
| 2014 | 32 | 2 | 94.12 |
| 2015 | 34 | 0 | 100.00 |
| 2016 | 35 | 0 | 100.00 |
| 2017 | 36 | 0 | 100.00 |
| 2018 | 38 | -1 | 102.70 |
| 2019 | 36 | 2 | 94.74 |
| 2020 | 37 | 2 | 94.87 |
| 2021 | 2 | 28 | 6.67 |
| 2022 | 41 | 0 | 100.00 |
| 2023 | 37 | 5 | 88.10 |
| 2024 | 0 | 42 | 0.00 |
| 2025 | 0 | 42 | 0.00 |
| Totals | 328 | 122 | 72.89 |