| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 1.61 | 1.91 | 1.37 |
| 2024 | 1.11 | 1.93 | 0.66 |
| 2023 | 1.44 | 2.52 | 0.93 |
| 2022 | 3.42 | 8.75 | 1.35 |
| 2021 | 21.73 | 55.72 | 6.17 |
| 2020 | 56.48 | 84.21 | 44.8 |
| 2019 | 51.47 | 72.39 | 30.31 |
| 2018 | 28.51 | 36.05 | 19.68 |
| 2017 | 45.27 | 110.66 | 24.96 |
| 2016 | 74.91 | 133.53 | 27.33 |
| 2015 | 24.89 | 45.73 | 11.95 |
| 2014 | 13.48 | 20.07 | 9.57 |
| 2013 | 18.25 | 29.44 | 7.26 |
| 2012 | 11.26 | 23.63 | 6.08 |
| 2011 | 38.11 | 97.45 | 17.4 |
| 2010 | 70 | 90.18 | 49.68 |
| 2009 | 49.95 | 73.12 | 28.78 |
| 2008 | 38.53 | 83.6 | 20.08 |
| 2007 | 62.02 | 98.06 | 14.41 |
| 2006 | 10.48 | 17.25 | 6.06 |
| 2005 | 9.55 | 13.98 | 5.86 |
| 2004 | 10.04 | 14.64 | 7.38 |