| Year | Protected | Not Protected | Protected % |
| 2008 | 0 | 31 | 0.00 |
| 2009 | 1 | 31 | 3.13 |
| 2010 | 0 | 32 | 0.00 |
| 2011 | 0 | 32 | 0.00 |
| 2012 | 0 | 33 | 0.00 |
| 2013 | 0 | 33 | 0.00 |
| 2014 | 6 | 28 | 17.65 |
| 2015 | 18 | 16 | 52.94 |
| 2016 | 6 | 29 | 17.14 |
| 2017 | 35 | 1 | 97.22 |
| 2018 | 37 | 0 | 100.00 |
| 2019 | 24 | 14 | 63.16 |
| 2020 | 0 | 39 | 0.00 |
| 2021 | 0 | 30 | 0.00 |
| 2022 | 0 | 41 | 0.00 |
| 2023 | 0 | 42 | 0.00 |
| Totals | 127 | 432 | 22.72 |