| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 34.47 | 40.32 | 27.64 |
| 2024 | 28.35 | 46.22 | 18.39 |
| 2023 | 46.06 | 54.73 | 21.39 |
| 2022 | 39.45 | 64.69 | 28.35 |
| 2021 | 27.35 | 29.81 | 23.34 |
| 2020 | 32.85 | 39.34 | 25.81 |
| 2019 | 25.64 | 31.85 | 19.53 |
| 2018 | 40.11 | 91.57 | 18.6 |
| 2017 | 49.42 | 63.08 | 36.56 |
| 2016 | 42.41 | 56.86 | 22.53 |
| 2015 | 27.07 | 43.08 | 11.4 |
| 2014 | 9.96 | 21.59 | 4.98 |
| 2013 | 5.6 | 6.78 | 4.69 |
| 2012 | 4.92 | 5.62 | 3.86 |
| 2011 | 5.96 | 7.45 | 3.94 |
| 2010 | 4.48 | 5.69 | 3.05 |
| 2009 | 3.59 | 6.24 | 1.3 |
| 2008 | 1.9 | 3.32 | 0.91 |
| 2007 | 2.63 | 3.62 | 1.8 |
| 2006 | 2.08 | 3.78 | 1.23 |