| Year | Hard | Breaking | Offspeed |
|---|---|---|---|
| 2008 | 8.92 | 10.17 | 7.00 |
| 2009 | 10.32 | 10.60 | 13.99 |
| 2010 | 8.97 | 16.05 | 11.54 |
| 2011 | 7.37 | 22.10 | 9.45 |
| 2012 | 7.68 | 19.98 | 7.58 |
| 2013 | 7.36 | 21.67 | 9.38 |
| 2014 | 7.54 | 24.66 | 0.00 |
| 2015 | 10.48 | 23.29 | 0.00 |
| 2016 | 9.74 | 21.88 | 14.29 |
| 2017 | 7.37 | 20.71 | 11.76 |
| 2018 | 9.02 | 16.05 | 0.00 |