| Year | Hard | Breaking | Offspeed |
|---|---|---|---|
| 2007 | 8.10 | -6.21 | 4.93 |
| 2008 | 8.47 | -4.51 | 5.05 |
| 2009 | 9.19 | -5.86 | 3.89 |
| 2010 | 8.62 | -5.33 | 3.98 |
| 2011 | 8.71 | -5.24 | 4.91 |
| 2012 | 9.40 | -6.00 | 5.03 |
| 2013 | 9.32 | -4.00 | 5.00 |
| 2014 | 8.56 | -3.13 | 3.83 |
| 2015 | 9.19 | -1.54 | 4.68 |
| 2016 | 8.93 | -1.57 | 2.72 |
| 2017 | 8.70 | -1.69 | 2.97 |
| 2018 | 10.34 | -3.23 | 3.65 |
| 2019 | 10.65 | -1.64 | 4.30 |