| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 10.15 | 11.41 | 7.58 |
| 2023 | 12.74 | 14.98 | 10.71 |
| 2022 | 13.49 | 16.18 | 10.07 |
| 2021 | 16.21 | 23.9 | 12.7 |
| 2020 | 15.26 | 28.49 | 7.19 |
| 2019 | 9.95 | 13.37 | 8.25 |
| 2018 | 12.13 | 16.54 | 9.8 |
| 2017 | 17.85 | 21.99 | 13.62 |
| 2016 | 17.23 | 28.36 | 8.75 |
| 2015 | 12.32 | 24 | 7.74 |
| 2014 | 7.46 | 9.39 | 6.01 |
| 2013 | 8.1 | 9.99 | 6.43 |
| 2012 | 9.41 | 13.39 | 6.55 |
| 2011 | 9.25 | 11.31 | 7.21 |
| 2010 | 11.75 | 14.48 | 9.75 |
| 2009 | 9.51 | 13.74 | 5.18 |
| 2008 | 6.09 | 8.82 | 3.59 |
| 2007 | 4.51 | 6.26 | 2.78 |
| 2006 | 2.77 | 3.57 | 1.95 |
| 2005 | 2.01 | 2.42 | 1.67 |