| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 4.63 | 5.45 | 3.74 |
| 2024 | 3.79 | 5.32 | 3.02 |
| 2023 | 7.28 | 16.79 | 3.19 |
| 2022 | 10 | 11.38 | 6.58 |
| 2021 | 53.87 | 95.04 | 20.78 |
| 2020 | 36.51 | 135.8 | 5.84 |
| 2019 | 4.12 | 7.54 | 2.78 |
| 2018 | 4.57 | 6.32 | 2.51 |
| 2017 | 6.37 | 9.79 | 4.8 |
| 2016 | 9.06 | 21.34 | 6.39 |
| 2015 | 21.03 | 27.36 | 12.8 |
| 2014 | 5.55 | 16.75 | 1.97 |
| 2013 | 2.22 | 2.86 | 1.45 |
| 2012 | 1.4 | 1.96 | 0.93 |
| 2011 | 2.9 | 4.72 | 1.63 |
| 2010 | 3.18 | 4.37 | 2.35 |
| 2009 | 1.92 | 2.79 | 1.15 |
| 2008 | 2.21 | 4.35 | 0.72 |
| 2007 | 2.68 | 3.65 | 2 |
| 2006 | 1.15 | 1.95 | 0.51 |
| 2005 | 1.3 | 2.37 | 0.49 |
| 2004 | 1.01 | 1.71 | 0.56 |