| Year | Hard | Breaking | Offspeed |
|---|---|---|---|
| 2008 | 6.20 | 7.09 | 8.14 |
| 2009 | 8.09 | 8.54 | 11.14 |
| 2010 | 8.28 | 9.71 | 9.60 |
| 2011 | 8.61 | 7.03 | 8.86 |
| 2012 | 10.24 | 11.67 | 8.49 |
| 2013 | 8.03 | 10.00 | 11.19 |
| 2014 | 7.51 | 10.62 | 6.25 |
| 2015 | 8.75 | 10.99 | 8.47 |
| 2016 | 10.09 | 10.78 | 12.50 |
| 2017 | 10.38 | 10.71 | 11.40 |
| 2018 | 11.29 | 10.88 | 13.07 |
| 2019 | 11.55 | 9.02 | 13.67 |
| 2020 | 10.45 | 12.43 | 9.73 |
| 2021 | 9.12 | 10.42 | 9.61 |