| Year | Protected | Not Protected | Protected % |
| 2015 | 29 | 5 | 85.29 |
| 2014 | 34 | 0 | 100.00 |
| 2020 | 34 | 0 | 100.00 |
| 2013 | 0 | 34 | 0.00 |
| 2019 | 34 | 0 | 100.00 |
| 2024 | 28 | 6 | 82.35 |
| 2018 | 34 | 0 | 100.00 |
| 2021 | 34 | 0 | 100.00 |
| 2022 | 33 | 1 | 97.06 |
| 2016 | 33 | 1 | 97.06 |
| 2017 | 33 | 1 | 97.06 |
| 2023 | 33 | 1 | 97.06 |
| Totals | 359 | 49 | 87.99 |