| Year | Protected | Not Protected | Protected % |
| 2011 | 1 | 31 | 3.13 |
| 2012 | 30 | 3 | 90.91 |
| 2013 | 33 | 0 | 100.00 |
| 2014 | 34 | 0 | 100.00 |
| 2015 | 34 | 0 | 100.00 |
| 2016 | 34 | 1 | 97.14 |
| 2017 | 36 | 0 | 100.00 |
| 2018 | 37 | 0 | 100.00 |
| 2019 | 38 | 0 | 100.00 |
| 2020 | 39 | 0 | 100.00 |
| 2021 | 3 | 27 | 10.00 |
| 2022 | 41 | 0 | 100.00 |
| 2023 | 41 | 1 | 97.62 |
| 2024 | 41 | 1 | 97.62 |
| Totals | 442 | 64 | 87.35 |