| Year | Protected | Not Protected | Protected % |
| 2010 | 1 | 31 | 3.13 |
| 2011 | 32 | 0 | 100.00 |
| 2012 | 33 | 0 | 100.00 |
| 2013 | 33 | 0 | 100.00 |
| 2014 | 34 | 0 | 100.00 |
| 2015 | 35 | -1 | 102.94 |
| 2016 | 35 | 0 | 100.00 |
| 2017 | 36 | 0 | 100.00 |
| 2018 | 37 | 0 | 100.00 |
| 2019 | 38 | 0 | 100.00 |
| 2020 | 39 | 0 | 100.00 |
| 2021 | 3 | 27 | 10.00 |
| 2022 | 40 | 1 | 97.56 |
| 2023 | 37 | 5 | 88.10 |
| 2024 | 7 | 35 | 16.67 |
| Totals | 440 | 98 | 81.78 |