| Year | Protected | Not Protected | Protected % |
| 2015 | 34 | 0 | 100.00 |
| 2014 | 34 | 0 | 100.00 |
| 2009 | 9 | 25 | 26.47 |
| 2020 | 0 | 34 | 0.00 |
| 2013 | 34 | 0 | 100.00 |
| 2019 | 0 | 34 | 0.00 |
| 2008 | 0 | 34 | 0.00 |
| 2012 | 34 | 0 | 100.00 |
| 2018 | 0 | 34 | 0.00 |
| 2021 | 0 | 34 | 0.00 |
| 2011 | 34 | 0 | 100.00 |
| 2016 | 34 | 0 | 100.00 |
| 2010 | 33 | 0 | 100.00 |
| 2017 | 5 | 29 | 14.71 |
| Totals | 251 | 224 | 52.84 |