| Year | Right Handed | Left Handed |
|---|---|---|
| 2007 | 8.60 | 8.61 |
| 2008 | 9.79 | 7.55 |
| 2009 | 10.44 | 8.82 |
| 2010 | 10.40 | 9.98 |
| 2012 | 10.69 | 8.15 |
| 2013 | 11.28 | 9.67 |
| 2014 | 10.82 | 9.09 |
| 2015 | 11.20 | 8.33 |
| 2016 | 9.12 | 8.26 |
| 2017 | 8.54 | 7.04 |
| 2018 | 10.43 | 8.87 |
| 2019 | 10.26 | 7.03 |
| 2020 | 13.73 | 6.88 |
| 2021 | 12.56 | 11.67 |