| Year | Protected | Not Protected | Protected % |
| 2010 | 0 | 32 | 0.00 |
| 2011 | 12 | 20 | 37.50 |
| 2012 | 33 | 0 | 100.00 |
| 2013 | 33 | 0 | 100.00 |
| 2014 | 24 | 10 | 70.59 |
| 2015 | 34 | 0 | 100.00 |
| 2016 | 3 | 32 | 8.57 |
| 2017 | 2 | 34 | 5.56 |
| 2018 | 2 | 35 | 5.41 |
| 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 |
| 2024 | 0 | 42 | 0.00 |
| Totals | 143 | 395 | 26.58 |