| Year | Hard | Breaking | Offspeed |
|---|---|---|---|
| 2007 | -3.27 | 6.62 | -7.61 |
| 2008 | -3.16 | 8.44 | -8.04 |
| 2009 | -4.42 | 9.79 | -8.51 |
| 2010 | -4.47 | 9.89 | -7.99 |
| 2012 | -2.77 | 10.26 | -6.91 |
| 2013 | -1.18 | 9.38 | -6.33 |
| 2014 | -1.30 | 9.54 | -8.16 |
| 2015 | -1.56 | 10.05 | -8.90 |
| 2016 | -1.92 | 10.27 | -7.16 |
| 2017 | -2.24 | 9.76 | -7.86 |
| 2018 | -2.91 | 11.00 | -8.91 |
| 2019 | -2.29 | 10.62 | -8.42 |
| 2020 | -2.27 | 9.75 | -8.00 |
| 2021 | -1.82 | 10.42 | -8.14 |