| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 0 | -4.92 | |
| 2024 | 5.24 | 7.08 | 4.59 |
| 2023 | 3.98 | 4.99 | 3.36 |
| 2022 | 5.13 | 7.75 | 3.27 |
| 2021 | 6.56 | 31.31 | 2.24 |
| 2020 | 21.64 | 39.23 | 10.26 |
| 2019 | 9.63 | 13.35 | 6.93 |
| 2018 | 8.65 | 13.05 | 5.23 |
| 2017 | 21.32 | 25.92 | 13.3 |
| 2016 | 12.74 | 33.01 | 6.73 |
| 2015 | 10.16 | 17.19 | 5.42 |
| 2014 | 2.42 | 4.93 | 1.68 |
| 2013 | 1.54 | 1.7 | 1.04 |
| 2012 | 1.75 | 3.34 | 1.1 |