| Year | Protected | Not Protected | Protected % |
| 2011 | 0 | 32 | 0.00 |
| 2012 | 7 | 26 | 21.21 |
| 2013 | 1 | 32 | 3.03 |
| 2014 | 7 | 27 | 20.59 |
| 2015 | 12 | 22 | 35.29 |
| 2016 | 16 | 19 | 45.71 |
| 2017 | 29 | 7 | 80.56 |
| 2018 | 9 | 28 | 24.32 |
| 2019 | 1 | 37 | 2.63 |
| 2020 | 0 | 39 | 0.00 |
| 2021 | 1 | 29 | 3.33 |
| 2022 | 5 | 36 | 12.20 |
| 2023 | 0 | 42 | 0.00 |
| 2024 | 0 | 42 | 0.00 |
| Totals | 88 | 418 | 17.39 |