| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 5.59 | 8.36 | 3.78 |
| 2024 | 4.46 | 6.19 | 3.47 |
| 2023 | 4.89 | 6.32 | 3.96 |
| 2022 | 6.02 | 7.82 | 5.05 |
| 2021 | 6.81 | 8.75 | 5.36 |
| 2020 | 6.42 | 10.68 | 2.94 |
| 2019 | 2.63 | 3.43 | 1.92 |
| 2018 | 2.74 | 4 | 2.01 |
| 2017 | 3.93 | 5.12 | 2.86 |
| 2016 | 5.62 | 7.66 | 3.55 |
| 2015 | 6.93 | 16.89 | 4 |
| 2014 | 7.63 | 10.62 | 6.19 |
| 2013 | 11.91 | 18.76 | 7.36 |
| 2012 | 0 | -22.05 | |
| 2011 | 0 | -21.19 | |
| 2010 | 0 | -18.14 | |
| 2009 | 0 | -35.99 | |
| 2008 | 171.34 | 475.72 | 107.1 |
| 2007 | 6.81 | 10.28 | 4.04 |
| 2006 | 2.96 | 4.3 | 1.11 |
| 2005 | 1.35 | 1.81 | 1 |