| Year | Protected | Not Protected | Protected % |
| 2012 | 0 | 33 | 0.00 |
| 2013 | 0 | 33 | 0.00 |
| 2014 | 3 | 31 | 8.82 |
| 2015 | 5 | 29 | 14.71 |
| 2016 | 0 | 35 | 0.00 |
| 2017 | 0 | 36 | 0.00 |
| 2018 | 10 | 27 | 27.03 |
| 2019 | 2 | 36 | 5.26 |
| 2020 | 0 | 39 | 0.00 |
| 2021 | 0 | 30 | 0.00 |
| 2022 | 3 | 38 | 7.32 |
| 2023 | 0 | 42 | 0.00 |
| 2024 | 0 | 42 | 0.00 |
| Totals | 23 | 451 | 4.85 |