| Year | Hard | Breaking | Offspeed |
|---|---|---|---|
| 2007 | 27.78 | 20.00 | 66.67 |
| 2008 | 17.14 | 19.10 | 16.00 |
| 2009 | 18.76 | 23.81 | 16.67 |
| 2010 | 19.20 | 14.52 | 11.43 |
| 2011 | 15.40 | 8.47 | 14.29 |
| 2012 | 20.51 | 21.74 | 16.87 |
| 2013 | 21.70 | 25.00 | 20.00 |
| 2014 | 22.61 | 19.23 | 35.29 |
| 2015 | 25.10 | 25.86 | 16.67 |
| 2016 | 27.67 | 17.50 | 11.90 |
| 2017 | 24.31 | 14.71 | 29.03 |