| Year | Protected | Not Protected | Protected % |
| 2013 | 5 | 28 | 15.15 |
| 2014 | 5 | 29 | 14.71 |
| 2015 | 5 | 29 | 14.71 |
| 2016 | 29 | 6 | 82.86 |
| 2017 | 0 | 36 | 0.00 |
| 2018 | 0 | 37 | 0.00 |
| 2019 | 0 | 38 | 0.00 |
| 2020 | 1 | 38 | 2.56 |
| 2021 | 2 | 28 | 6.67 |
| 2022 | 0 | 41 | 0.00 |
| 2023 | 0 | 42 | 0.00 |
| 2024 | 0 | 42 | 0.00 |
| 2025 | 0 | 42 | 0.00 |
| Totals | 47 | 436 | 9.73 |