| Year | Right Handed | Left Handed |
|---|---|---|
| 2007 | 20.50 | 20.35 |
| 2008 | 22.59 | 18.18 |
| 2009 | 23.22 | 20.63 |
| 2010 | 23.17 | 23.63 |
| 2012 | 23.26 | 18.19 |
| 2013 | 22.95 | 20.77 |
| 2014 | 22.73 | 20.10 |
| 2015 | 21.43 | 16.67 |
| 2016 | 21.00 | 19.11 |
| 2017 | 19.15 | 16.49 |
| 2018 | 24.82 | 22.64 |
| 2019 | 23.07 | 17.93 |
| 2020 | 29.02 | 15.74 |
| 2021 | 27.18 | 27.72 |