| Year | Protected | Not Protected | Protected % |
| 2011 | 0 | 32 | 0.00 |
| 2012 | 0 | 33 | 0.00 |
| 2013 | 1 | 32 | 3.03 |
| 2014 | 6 | 28 | 17.65 |
| 2015 | 19 | 15 | 55.88 |
| 2016 | 0 | 35 | 0.00 |
| 2017 | 0 | 36 | 0.00 |
| 2018 | 0 | 37 | 0.00 |
| 2019 | 0 | 38 | 0.00 |
| 2020 | 5 | 34 | 12.82 |
| 2021 | 3 | 27 | 10.00 |
| 2022 | 32 | 9 | 78.05 |
| 2023 | 4 | 38 | 9.52 |
| 2024 | 0 | 42 | 0.00 |
| Totals | 70 | 436 | 13.83 |