| Year | Protected | Not Protected | Protected % |
| 2010 | 0 | 32 | 0.00 |
| 2011 | 0 | 32 | 0.00 |
| 2012 | 0 | 33 | 0.00 |
| 2013 | 0 | 33 | 0.00 |
| 2014 | 0 | 34 | 0.00 |
| 2015 | 0 | 34 | 0.00 |
| 2016 | 0 | 35 | 0.00 |
| 2017 | 12 | 24 | 33.33 |
| 2018 | 36 | 1 | 97.30 |
| 2019 | 34 | 4 | 89.47 |
| 2020 | 8 | 31 | 20.51 |
| 2021 | 4 | 26 | 13.33 |
| 2022 | 9 | 32 | 21.95 |
| 2023 | 1 | 41 | 2.38 |
| 2024 | 4 | 38 | 9.52 |
| Totals | 108 | 430 | 20.07 |