| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 5.46 | 7.94 | 3.65 |
| 2023 | 11.39 | 19.02 | 7.1 |
| 2022 | 12.8 | 20.54 | 8.22 |
| 2021 | 22.55 | 29.88 | 15.74 |
| 2020 | 22.59 | 28.6 | 16.66 |
| 2019 | 15.51 | 19.43 | 9.8 |
| 2018 | 10.72 | 13.54 | 8.77 |
| 2017 | 11.11 | 13.45 | 9 |
| 2016 | 14.27 | 17.54 | 10.31 |
| 2015 | 26.88 | 52.74 | 10.9 |
| 2014 | 12.09 | 24.26 | 7.41 |
| 2013 | 7.02 | 9.81 | 5.04 |
| 2012 | 6.46 | 8.01 | 4.73 |
| 2011 | 9.52 | 14.39 | 6.47 |
| 2010 | 12.93 | 16.15 | 9.39 |
| 2009 | 8.57 | 13.23 | 5.18 |
| 2008 | 8.17 | 15.23 | 3.55 |
| 2007 | 10.05 | 16.96 | 3.97 |
| 2006 | 2.54 | 4.34 | 1.45 |
| 2005 | 1.75 | 2.12 | 1.04 |
| 2004 | 2.61 | 3.89 | 1.97 |