| Year | In Zone | Out of Zone |
|---|---|---|
| 2007 | -25.74 | -26.35 |
| 2008 | -24.11 | -26.54 |
| 2009 | -23.01 | -25.99 |
| 2010 | -21.73 | -26.10 |
| 2011 | -23.04 | -24.68 |
| 2012 | -21.72 | -23.98 |
| 2013 | -20.75 | -23.43 |
| 2014 | -22.57 | -25.86 |
| 2015 | -21.34 | -25.59 |
| 2016 | -19.16 | -23.48 |
| 2017 | -21.76 | -25.58 |
| 2018 | -21.61 | -24.96 |
| 2019 | -23.36 | -26.83 |
| 2020 | -22.67 | -27.07 |
| 2021 | -24.19 | -26.81 |