| Year | Protected | Not Protected | Protected % |
| 2012 | 0 | 33 | 0.00 |
| 2013 | 0 | 33 | 0.00 |
| 2014 | 22 | 12 | 64.71 |
| 2015 | 0 | 34 | 0.00 |
| 2016 | 5 | 30 | 14.29 |
| 2017 | 0 | 36 | 0.00 |
| 2018 | 1 | 36 | 2.70 |
| 2019 | 35 | 3 | 92.11 |
| 2020 | 37 | 2 | 94.87 |
| 2021 | 0 | 30 | 0.00 |
| 2022 | 0 | 41 | 0.00 |
| 2023 | 0 | 42 | 0.00 |
| 2024 | 0 | 42 | 0.00 |
| Totals | 100 | 374 | 21.10 |