| Year | Hard | Breaking | Offspeed |
|---|---|---|---|
| 2008 | 6.25 | 10.00 | 11.76 |
| 2009 | 7.02 | 12.09 | 15.77 |
| 2010 | 5.40 | 13.07 | 16.49 |
| 2011 | 9.53 | 10.97 | 15.52 |
| 2012 | 8.17 | 12.53 | 14.77 |
| 2013 | 9.74 | 14.53 | 15.71 |
| 2014 | 8.83 | 10.96 | 15.47 |
| 2015 | 6.63 | 12.73 | 14.13 |
| 2016 | 7.34 | 10.54 | 13.49 |
| 2017 | 6.15 | 13.19 | 17.34 |
| 2018 | 8.02 | 16.90 | 16.00 |