| Year | Hard | Breaking | Offspeed |
|---|---|---|---|
| 2007 | 6.23 | 6.29 | 6.25 |
| 2008 | 6.01 | 6.14 | 6.13 |
| 2009 | 5.95 | 6.05 | 5.98 |
| 2010 | 5.93 | 6.00 | 5.93 |
| 2011 | 5.98 | 6.09 | 6.02 |
| 2012 | 5.80 | 5.97 | 5.80 |
| 2013 | 5.86 | 6.01 | 5.87 |
| 2014 | 5.72 | 5.80 | 5.76 |
| 2015 | 5.63 | 5.72 | 5.66 |
| 2016 | 5.65 | 5.81 | 5.73 |
| 2017 | 5.67 | 5.77 | 5.72 |
| 2018 | 5.66 | 5.79 | 5.70 |
| 2019 | 5.65 | 5.78 | 5.69 |
| 2020 | 5.72 | 5.85 | 5.74 |
| 2021 | 5.85 | 6.00 | 5.90 |