| Year | In Zone | Out of Zone |
|---|---|---|
| 2008 | 28.88 | 18.92 |
| 2009 | 29.94 | 22.47 |
| 2010 | 29.39 | 24.00 |
| 2011 | 30.77 | 23.88 |
| 2012 | 27.60 | 22.31 |
| 2013 | 21.08 | 14.02 |
| 2014 | 19.07 | 3.26 |
| 2015 | 17.14 | 13.93 |
| 2016 | 19.42 | 18.39 |
| 2017 | 25.45 | 12.30 |
| 2018 | 20.19 | 15.60 |
| 2019 | 25.15 | 9.73 |
| 2020 | 24.14 | 8.70 |
| 2021 | 26.34 | 14.81 |