| Year | Protected | Not Protected | Protected % |
| 2009 | 0 | 32 | 0.00 |
| 2010 | 0 | 32 | 0.00 |
| 2011 | 8 | 24 | 25.00 |
| 2012 | 7 | 26 | 21.21 |
| 2013 | 7 | 26 | 21.21 |
| 2014 | 0 | 34 | 0.00 |
| 2015 | 17 | 17 | 50.00 |
| 2016 | 2 | 33 | 5.71 |
| 2017 | 0 | 36 | 0.00 |
| 2018 | 0 | 37 | 0.00 |
| 2019 | 0 | 38 | 0.00 |
| 2020 | 0 | 39 | 0.00 |
| 2021 | 0 | 30 | 0.00 |
| 2022 | 0 | 41 | 0.00 |
| 2023 | 0 | 42 | 0.00 |
| Totals | 41 | 487 | 7.77 |