| Year | In Zone | Out of Zone |
|---|---|---|
| 2007 | -21.00 | -23.14 |
| 2008 | -20.15 | -22.04 |
| 2009 | -19.10 | -21.47 |
| 2010 | -21.52 | -23.20 |
| 2011 | -20.85 | -23.24 |
| 2012 | -20.75 | -23.58 |
| 2013 | -20.62 | -22.66 |
| 2014 | -21.98 | -24.25 |
| 2015 | -21.62 | -21.05 |
| 2016 | -21.38 | -21.97 |
| 2017 | -20.49 | -22.10 |
| 2018 | -18.43 | -22.70 |
| 2019 | -19.15 | -24.37 |