| Year | Protected | Not Protected | Protected % |
| 2008 | 0 | 31 | 0.00 |
| 2009 | 5 | 27 | 15.63 |
| 2010 | 11 | 21 | 34.38 |
| 2011 | 29 | 3 | 90.63 |
| 2012 | 11 | 22 | 33.33 |
| 2013 | 24 | 9 | 72.73 |
| 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 | 42 | 0 | 100.00 |
| 2024 | 4 | 38 | 9.52 |
| 2025 | 0 | 42 | 0.00 |
| Totals | 423 | 220 | 65.79 |