| Year | Hard | Breaking | Offspeed |
|---|---|---|---|
| 2008 | 18.56 | 34.47 | 28.57 |
| 2009 | 15.67 | 20.82 | 34.23 |
| 2010 | 19.06 | 28.87 | 25.48 |
| 2011 | 12.18 | 27.76 | 33.61 |
| 2012 | 17.72 | 21.32 | 28.61 |
| 2013 | 17.32 | 33.78 | 37.04 |
| 2014 | 18.94 | 26.15 | 34.84 |
| 2015 | 17.05 | 19.43 | 37.54 |
| 2016 | 18.44 | 18.75 | 39.03 |
| 2017 | 16.28 | 19.58 | 41.90 |
| 2018 | 12.90 | 18.18 | 45.90 |