| Year | Protected | Not Protected | Protected % |
| 2015 | 1 | 33 | 2.94 |
| 2014 | 7 | 27 | 20.59 |
| 2020 | 16 | 18 | 47.06 |
| 2013 | 1 | 33 | 2.94 |
| 2019 | 7 | 27 | 20.59 |
| 2024 | 0 | 34 | 0.00 |
| 2012 | 0 | 34 | 0.00 |
| 2018 | 26 | 8 | 76.47 |
| 2021 | 2 | 32 | 5.88 |
| 2011 | 0 | 34 | 0.00 |
| 2022 | 2 | 32 | 5.88 |
| 2016 | 2 | 32 | 5.88 |
| 2017 | 1 | 33 | 2.94 |
| 2023 | 0 | 34 | 0.00 |
| Totals | 65 | 411 | 13.66 |