| Year | Hard | Breaking | Offspeed |
|---|---|---|---|
| 2008 | 20.72 | 16.88 | 26.92 |
| 2009 | 23.83 | 19.21 | 20.97 |
| 2010 | 21.98 | 17.68 | 24.56 |
| 2011 | 20.69 | 22.64 | 17.28 |
| 2012 | 20.97 | 19.58 | 16.49 |
| 2013 | 29.27 | 23.77 | 25.32 |
| 2014 | 26.76 | 18.89 | 24.00 |
| 2015 | 25.00 | 31.82 | 33.33 |
| 2016 | 25.00 | 26.64 | 27.27 |
| 2017 | 26.75 | 26.92 | 28.95 |