| Year | Protected | Not Protected | Protected % |
| 2009 | 0 | 32 | 0.00 |
| 2010 | 0 | 32 | 0.00 |
| 2011 | 1 | 31 | 3.13 |
| 2012 | 0 | 33 | 0.00 |
| 2013 | 0 | 33 | 0.00 |
| 2014 | 0 | 34 | 0.00 |
| 2015 | 11 | 23 | 32.35 |
| 2016 | 32 | 3 | 91.43 |
| 2017 | 35 | 1 | 97.22 |
| 2018 | 37 | 0 | 100.00 |
| 2019 | 38 | 0 | 100.00 |
| 2020 | 8 | 31 | 20.51 |
| 2021 | 0 | 30 | 0.00 |
| 2022 | 0 | 41 | 0.00 |
| 2023 | 2 | 40 | 4.76 |
| 2024 | 0 | 42 | 0.00 |
| Totals | 164 | 406 | 28.77 |