| Year | Hard | Breaking | Offspeed |
|---|---|---|---|
| 2008 | 14.29 | 25.00 | 28.57 |
| 2009 | 16.82 | 32.21 | 35.65 |
| 2010 | 12.82 | 35.94 | 36.64 |
| 2011 | 21.43 | 35.54 | 34.44 |
| 2012 | 18.92 | 36.43 | 30.00 |
| 2013 | 21.96 | 32.61 | 28.95 |
| 2014 | 19.83 | 30.53 | 35.80 |
| 2015 | 15.54 | 37.69 | 32.02 |
| 2016 | 17.21 | 33.00 | 30.64 |
| 2017 | 14.12 | 35.48 | 36.60 |
| 2018 | 18.21 | 48.98 | 36.78 |