| Year | Hard | Breaking | Offspeed |
|---|---|---|---|
| 2007 | 19.61 | 14.29 | 27.78 |
| 2008 | 22.22 | 15.09 | 20.69 |
| 2009 | 22.69 | 26.52 | 21.05 |
| 2010 | 24.53 | 17.68 | 19.57 |
| 2011 | 21.45 | 17.04 | 14.29 |
| 2012 | 14.73 | 17.39 | 23.81 |
| 2013 | 23.29 | 16.81 | 34.69 |
| 2014 | 29.33 | 26.67 | 13.04 |
| 2015 | 32.45 | 27.65 | 22.73 |
| 2016 | 26.32 | 26.26 | 30.00 |
| 2017 | 25.08 | 26.91 | 7.41 |
| 2018 | 26.24 | 23.49 | 47.62 |