| Year | Hard | Breaking | Offspeed |
|---|---|---|---|
| 2007 | 21.20 | 27.78 | 25.00 |
| 2008 | 16.35 | 31.48 | 26.09 |
| 2009 | 21.99 | 36.70 | 36.67 |
| 2010 | 21.83 | 37.50 | 31.25 |
| 2011 | 20.22 | 29.05 | 28.29 |
| 2012 | 17.68 | 31.93 | 33.01 |
| 2013 | 16.48 | 27.88 | 34.54 |
| 2014 | 18.63 | 40.29 | 36.73 |
| 2015 | 19.42 | 46.33 | 38.64 |
| 2016 | 19.66 | 52.94 | 40.74 |
| 2017 | 20.29 | 50.00 | 32.90 |
| 2018 | 17.53 | 39.88 | 23.21 |
| 2019 | 17.61 | 41.11 | 22.92 |
| 2020 | 14.99 | 31.25 | 32.91 |
| 2021 | 16.37 | 37.04 | 28.87 |