| Year | Protected | Not Protected | Protected % |
| 2015 | 34 | 0 | 100.00 |
| 2014 | 34 | 0 | 100.00 |
| 2020 | 11 | 23 | 32.35 |
| 2013 | 31 | 3 | 91.18 |
| 2019 | 35 | -1 | 102.94 |
| 2024 | 0 | 34 | 0.00 |
| 2012 | 32 | 2 | 94.12 |
| 2018 | 34 | 0 | 100.00 |
| 2021 | 22 | 12 | 64.71 |
| 2011 | 0 | 34 | 0.00 |
| 2022 | 0 | 34 | 0.00 |
| 2016 | 34 | 0 | 100.00 |
| 2010 | 0 | 33 | 0.00 |
| 2017 | 34 | 0 | 100.00 |
| 2023 | 0 | 34 | 0.00 |
| Totals | 301 | 208 | 59.14 |