| Year | Protected | Not Protected | Protected % |
| 2015 | 0 | 34 | 0.00 |
| 2014 | 0 | 34 | 0.00 |
| 2020 | 8 | 26 | 23.53 |
| 2013 | 0 | 34 | 0.00 |
| 2019 | 0 | 34 | 0.00 |
| 2012 | 0 | 34 | 0.00 |
| 2018 | 8 | 26 | 23.53 |
| 2021 | 0 | 34 | 0.00 |
| 2011 | 0 | 34 | 0.00 |
| 2022 | 2 | 32 | 5.88 |
| 2016 | 0 | 34 | 0.00 |
| 2017 | 0 | 34 | 0.00 |
| 2023 | 2 | 32 | 5.88 |
| Totals | 20 | 422 | 4.52 |