| Year | Hard | Breaking | Offspeed |
|---|---|---|---|
| 2007 | 6.29 | 10.51 | 15.27 |
| 2008 | 6.17 | 10.41 | 16.26 |
| 2009 | 5.42 | 12.26 | 14.50 |
| 2010 | 7.69 | 10.99 | 10.25 |
| 2011 | 7.20 | 12.11 | 14.97 |
| 2012 | 9.71 | 16.78 | 17.99 |
| 2013 | 16.36 | 13.18 | 15.81 |
| 2014 | 7.16 | 16.75 | 15.42 |
| 2015 | 4.75 | 12.32 | 14.57 |
| 2016 | 5.30 | 12.88 | 12.73 |
| 2017 | 4.92 | 13.08 | 10.25 |
| 2018 | 7.45 | 14.87 | 16.91 |