| Year | Hard | Breaking | Offspeed |
|---|---|---|---|
| 2008 | 23.86 | 34.78 | 31.25 |
| 2009 | 32.21 | 28.79 | 26.83 |
| 2010 | 27.87 | 26.92 | 22.99 |
| 2011 | 27.70 | 20.67 | 26.13 |
| 2012 | 26.32 | 23.47 | 23.74 |
| 2013 | 26.43 | 21.85 | 19.29 |
| 2014 | 28.28 | 28.15 | 22.34 |
| 2015 | 27.24 | 25.20 | 13.19 |
| 2016 | 31.27 | 27.36 | 12.12 |
| 2017 | 26.70 | 31.34 | 20.90 |
| 2018 | 26.11 | 29.27 | 17.59 |