| Year | Protected | Not Protected | Protected % |
| 2015 | 34 | 0 | 100.00 |
| 2014 | 34 | 0 | 100.00 |
| 2009 | 34 | 0 | 100.00 |
| 2020 | 5 | 29 | 14.71 |
| 2007 | 0 | 33 | 0.00 |
| 2013 | 34 | 0 | 100.00 |
| 2019 | 7 | 27 | 20.59 |
| 2024 | 0 | 34 | 0.00 |
| 2008 | 34 | 0 | 100.00 |
| 2012 | 34 | 0 | 100.00 |
| 2018 | 0 | 34 | 0.00 |
| 2021 | 0 | 34 | 0.00 |
| 2011 | 34 | 0 | 100.00 |
| 2022 | 0 | 34 | 0.00 |
| 2016 | 34 | 0 | 100.00 |
| 2010 | 33 | 0 | 100.00 |
| 2017 | 27 | 7 | 79.41 |
| 2023 | 0 | 34 | 0.00 |
| Totals | 344 | 266 | 56.39 |