| Year | Hard | Breaking | Offspeed |
|---|---|---|---|
| 2010 | 24.07 | 32.14 | 17.39 |
| 2011 | 16.67 | 25.00 | 20.00 |
| 2012 | 24.74 | 19.30 | 22.00 |
| 2013 | 22.55 | 16.67 | 23.64 |
| 2014 | 26.95 | 21.74 | 25.27 |
| 2015 | 33.96 | 22.22 | 28.57 |
| 2016 | 34.74 | 26.61 | 15.00 |
| 2017 | 25.19 | 24.60 | 12.50 |
| 2018 | 27.00 | 19.57 | 26.67 |
| 2019 | 24.35 | 25.61 | 22.45 |