| Year | Protected | Not Protected | Protected % |
| 2010 | 0 | 32 | 0.00 |
| 2011 | 0 | 32 | 0.00 |
| 2012 | 0 | 33 | 0.00 |
| 2013 | 1 | 32 | 3.03 |
| 2014 | 0 | 34 | 0.00 |
| 2015 | 0 | 34 | 0.00 |
| 2016 | 35 | 0 | 100.00 |
| 2017 | 3 | 33 | 8.33 |
| 2018 | 6 | 31 | 16.22 |
| 2019 | 14 | 24 | 36.84 |
| 2020 | 2 | 37 | 5.13 |
| 2021 | 0 | 30 | 0.00 |
| 2022 | 0 | 41 | 0.00 |
| 2023 | 0 | 42 | 0.00 |
| 2024 | 0 | 42 | 0.00 |
| Totals | 61 | 477 | 11.34 |