| Year | Protected | Not Protected | Protected % |
| 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 | 1 | 35 | 2.78 |
| 2018 | 33 | 4 | 89.19 |
| 2019 | 21 | 17 | 55.26 |
| 2020 | 12 | 27 | 30.77 |
| 2021 | 2 | 28 | 6.67 |
| 2022 | 0 | 41 | 0.00 |
| 2023 | 0 | 42 | 0.00 |
| 2024 | 0 | 42 | 0.00 |
| Totals | 69 | 405 | 14.56 |