| Year | Protected | Not Protected | Protected % |
| 2013 | 0 | 33 | 0.00 |
| 2014 | 0 | 34 | 0.00 |
| 2015 | 17 | 17 | 50.00 |
| 2016 | 5 | 30 | 14.29 |
| 2017 | 0 | 36 | 0.00 |
| 2018 | 0 | 37 | 0.00 |
| 2019 | 0 | 38 | 0.00 |
| 2020 | 1 | 38 | 2.56 |
| 2021 | 0 | 30 | 0.00 |
| 2022 | 3 | 38 | 7.32 |
| 2023 | 0 | 42 | 0.00 |
| 2024 | 0 | 42 | 0.00 |
| 2025 | 0 | 42 | 0.00 |
| Totals | 26 | 457 | 5.38 |