| Year | Hard | Breaking | Offspeed |
|---|---|---|---|
| 2007 | 16.11 | 16.67 | 8.33 |
| 2008 | 18.20 | 18.84 | 14.52 |
| 2009 | 19.35 | 17.50 | 19.19 |
| 2010 | 20.77 | 22.33 | 20.93 |
| 2011 | 20.37 | 22.08 | 17.39 |
| 2012 | 22.87 | 23.58 | 20.18 |
| 2013 | 25.69 | 14.71 | 21.62 |
| 2014 | 22.38 | 34.94 | 17.86 |
| 2015 | 23.75 | 19.78 | 35.29 |
| 2016 | 28.02 | 19.74 | 16.33 |