| Year | Right Handed | Left Handed |
|---|---|---|
| 2007 | 29.03 | 31.40 |
| 2008 | 25.34 | 19.31 |
| 2009 | 26.40 | 22.19 |
| 2010 | 27.86 | 27.30 |
| 2011 | 27.16 | 23.46 |
| 2012 | 28.40 | 26.91 |
| 2013 | 26.07 | 23.57 |
| 2014 | 28.96 | 20.71 |
| 2015 | 29.28 | 24.06 |
| 2016 | 25.68 | 29.93 |
| 2017 | 22.60 | 18.08 |
| 2018 | 26.79 | 25.66 |
| 2019 | 28.49 | 22.62 |