| Year | Protected | Not Protected | Protected % |
| 2012 | 0 | 33 | 0.00 |
| 2013 | 6 | 27 | 18.18 |
| 2014 | 4 | 30 | 11.76 |
| 2015 | 3 | 31 | 8.82 |
| 2016 | 9 | 26 | 25.71 |
| 2017 | 9 | 27 | 25.00 |
| 2018 | 17 | 20 | 45.95 |
| 2019 | 0 | 38 | 0.00 |
| 2020 | 1 | 38 | 2.56 |
| 2021 | 0 | 30 | 0.00 |
| 2022 | 0 | 41 | 0.00 |
| 2023 | 0 | 42 | 0.00 |
| 2024 | 0 | 42 | 0.00 |
| Totals | 49 | 425 | 10.34 |