| Year | Protected | Not Protected | Protected % |
| 2015 | 0 | 34 | 0.00 |
| 2014 | 0 | 34 | 0.00 |
| 2020 | 7 | 27 | 20.59 |
| 2013 | 0 | 34 | 0.00 |
| 2019 | 23 | 11 | 67.65 |
| 2024 | 12 | 22 | 35.29 |
| 2012 | 0 | 34 | 0.00 |
| 2018 | 32 | 2 | 94.12 |
| 2021 | 10 | 24 | 29.41 |
| 2022 | 14 | 20 | 41.18 |
| 2016 | 10 | 24 | 29.41 |
| 2017 | 30 | 4 | 88.24 |
| 2023 | 18 | 16 | 52.94 |
| Totals | 156 | 286 | 35.29 |