| Year | Protected | Not Protected | Protected % |
| 2011 | 0 | 32 | 0.00 |
| 2012 | 3 | 30 | 9.09 |
| 2013 | 0 | 33 | 0.00 |
| 2014 | 24 | 10 | 70.59 |
| 2015 | 32 | 2 | 94.12 |
| 2016 | 9 | 26 | 25.71 |
| 2017 | 14 | 22 | 38.89 |
| 2018 | 3 | 34 | 8.11 |
| 2019 | 1 | 37 | 2.63 |
| 2020 | 0 | 39 | 0.00 |
| 2021 | 0 | 30 | 0.00 |
| 2022 | 0 | 41 | 0.00 |
| 2023 | 0 | 42 | 0.00 |
| 2024 | 0 | 42 | 0.00 |
| 2025 | 0 | 42 | 0.00 |
| Totals | 86 | 462 | 15.69 |