| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 7.44 | 8.34 | 6.29 |
| 2024 | 5.7 | 7.21 | 4.4 |
| 2023 | 8.79 | 13.32 | 6.2 |
| 2022 | 10.01 | 13.76 | 6.93 |
| 2021 | 12.62 | 15.45 | 9.86 |
| 2020 | 9.4 | 13.12 | 6.74 |
| 2019 | 36.77 | 110.95 | 6.67 |
| 2018 | 43.49 | 99.08 | 15.56 |
| 2017 | 41.5 | 130.18 | 16.59 |
| 2016 | 38.18 | 136.91 | 7.36 |
| 2015 | 9.52 | 15.07 | 3.08 |
| 2014 | 3.24 | 4.51 | 2.13 |
| 2013 | 4.41 | 7.46 | 3 |
| 2012 | 8.4 | 13.87 | 3.18 |
| 2011 | 5.45 | 7.46 | 3.46 |
| 2010 | 3.39 | 5.46 | 2.39 |
| 2009 | 6.82 | 17.04 | 2.62 |
| 2008 | 8.07 | 13.82 | 3.75 |
| 2007 | 6.76 | 10.2 | 3.71 |
| 2006 | 4.15 | 6.13 | 2.94 |
| 2005 | 3.17 | 4.5 | 2.49 |
| 2004 | 5.47 | 10.39 | 3.2 |