| Year | Hard | Breaking | Offspeed |
|---|---|---|---|
| 2007 | 5.60 | 13.08 | 8.08 |
| 2008 | 6.26 | 20.05 | 12.71 |
| 2009 | 3.53 | 16.49 | 12.20 |
| 2010 | 3.49 | 17.81 | 10.98 |
| 2011 | 3.93 | 18.15 | 4.00 |
| 2012 | 2.96 | 18.74 | 8.99 |
| 2013 | 4.84 | 18.79 | 9.22 |
| 2014 | 5.80 | 22.29 | 15.48 |
| 2015 | 5.06 | 17.88 | 11.50 |
| 2016 | 6.31 | 17.69 | 9.06 |
| 2017 | 7.00 | 17.50 | 10.80 |
| 2018 | 3.23 | 6.06 | 7.59 |
| 2019 | 3.08 | 10.38 | 0.00 |
| 2021 | 6.83 | 16.67 | 3.13 |