| Year | Protected | Not Protected | Protected % |
| 2011 | 0 | 32 | 0.00 |
| 2012 | 0 | 33 | 0.00 |
| 2013 | 4 | 29 | 12.12 |
| 2014 | 25 | 9 | 73.53 |
| 2015 | 33 | 1 | 97.06 |
| 2016 | 34 | 1 | 97.14 |
| 2017 | 36 | 0 | 100.00 |
| 2018 | 15 | 22 | 40.54 |
| 2019 | 2 | 36 | 5.26 |
| 2020 | 0 | 39 | 0.00 |
| 2021 | 1 | 29 | 3.33 |
| 2022 | 0 | 41 | 0.00 |
| 2023 | 0 | 42 | 0.00 |
| Totals | 150 | 314 | 32.33 |