| Year | Hard | Breaking | Offspeed |
|---|---|---|---|
| 2007 | 20.90 | 12.77 | 20.83 |
| 2008 | 17.61 | 14.42 | 20.59 |
| 2009 | 17.52 | 20.63 | 12.90 |
| 2010 | 19.82 | 13.10 | 17.28 |
| 2011 | 20.81 | 18.37 | 21.21 |
| 2012 | 20.70 | 18.75 | 18.87 |
| 2013 | 25.43 | 18.80 | 18.64 |
| 2014 | 26.95 | 30.69 | 26.83 |
| 2015 | 32.36 | 35.79 | 28.81 |
| 2016 | 30.56 | 27.27 | 29.51 |