| Year | Hard | Breaking | Offspeed |
|---|---|---|---|
| 2009 | 8.92 | -5.53 | 2.44 |
| 2010 | 7.82 | -6.73 | 0.99 |
| 2011 | 8.69 | -7.19 | 4.05 |
| 2012 | 8.75 | -6.11 | 2.71 |
| 2013 | 8.63 | -7.52 | 3.40 |
| 2014 | 8.70 | -6.66 | 3.32 |
| 2015 | 9.22 | -5.30 | 3.46 |
| 2016 | 9.38 | -0.48 | 3.23 |
| 2017 | 9.06 | -2.96 | 3.33 |
| 2018 | 8.42 | -3.16 | 2.20 |
| 2019 | 7.20 | -5.64 | 1.21 |