| Year | In Zone | Out of Zone |
|---|---|---|
| 2007 | 49.75 | 50.25 |
| 2008 | 51.49 | 48.51 |
| 2009 | 47.42 | 52.58 |
| 2010 | 49.72 | 50.28 |
| 2011 | 49.59 | 50.41 |
| 2012 | 47.70 | 52.30 |
| 2013 | 48.16 | 51.84 |
| 2014 | 46.59 | 53.41 |
| 2015 | 47.75 | 52.25 |
| 2016 | 42.54 | 57.46 |
| 2017 | 43.64 | 56.36 |
| 2018 | 43.69 | 56.31 |
| 2019 | 50.00 | 50.00 |
| 2021 | 41.52 | 58.48 |