| Year | Hard | Breaking | Offspeed |
|---|---|---|---|
| 2007 | 12.52 | 9.48 | 12.33 |
| 2008 | 12.88 | 15.31 | 10.71 |
| 2009 | 7.82 | 22.82 | 6.98 |
| 2010 | 9.29 | 19.86 | 4.93 |
| 2011 | 9.98 | 18.39 | 8.33 |
| 2012 | 5.77 | 18.43 | 10.68 |
| 2013 | 5.61 | 15.83 | 11.45 |
| 2014 | 5.35 | 15.09 | 17.20 |
| 2015 | 7.54 | 11.33 | 20.59 |
| 2016 | 12.65 | 10.53 | 4.76 |
| 2017 | 14.26 | 23.63 | 0.00 |
| 2018 | 12.59 | 22.73 | 100.00 |