| Year | Protected | Not Protected | Protected % |
| 2012 | 0 | 33 | 0.00 |
| 2013 | 0 | 33 | 0.00 |
| 2014 | 0 | 34 | 0.00 |
| 2015 | 0 | 34 | 0.00 |
| 2016 | 35 | 0 | 100.00 |
| 2017 | 35 | 1 | 97.22 |
| 2018 | 36 | 1 | 97.30 |
| 2019 | 36 | 2 | 94.74 |
| 2020 | 0 | 39 | 0.00 |
| 2021 | 0 | 30 | 0.00 |
| 2022 | 1 | 40 | 2.44 |
| 2023 | 0 | 42 | 0.00 |
| 2024 | 0 | 42 | 0.00 |
| Totals | 143 | 331 | 30.17 |