| Year | Protected | Not Protected | Protected % |
| 2008 | 0 | 31 | 0.00 |
| 2009 | 28 | 4 | 87.50 |
| 2010 | 15 | 17 | 46.88 |
| 2011 | 0 | 32 | 0.00 |
| 2012 | 0 | 33 | 0.00 |
| 2013 | 17 | 16 | 51.52 |
| 2014 | 34 | 0 | 100.00 |
| 2015 | 34 | 0 | 100.00 |
| 2016 | 35 | 0 | 100.00 |
| 2017 | 36 | 0 | 100.00 |
| 2018 | 6 | 31 | 16.22 |
| 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 | 205 | 354 | 36.67 |