| Year | Protected | Not Protected | Protected % |
| 2015 | 0 | 34 | 0.00 |
| 2014 | 0 | 34 | 0.00 |
| 2009 | 0 | 34 | 0.00 |
| 2020 | 0 | 34 | 0.00 |
| 2013 | 4 | 30 | 11.76 |
| 2019 | 11 | 23 | 32.35 |
| 2012 | 3 | 31 | 8.82 |
| 2018 | 0 | 34 | 0.00 |
| 2021 | 0 | 34 | 0.00 |
| 2011 | 0 | 34 | 0.00 |
| 2016 | 0 | 34 | 0.00 |
| 2010 | 6 | 27 | 18.18 |
| 2017 | 0 | 34 | 0.00 |
| Totals | 24 | 417 | 5.44 |