| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2026 | 7.17 | 8.24 | 5.41 |
| 2025 | 6.61 | 10.6 | 4.75 |
| 2024 | 8.59 | 13.01 | 4.61 |
| 2023 | 5.06 | 10.53 | 3.09 |
| 2022 | 9.11 | 20.29 | 4.25 |
| 2021 | 20.32 | 26.88 | 15.87 |
| 2020 | 11.38 | 28.09 | 3.3 |
| 2019 | 6.27 | 10.33 | 3.19 |
| 2018 | 43.63 | 152.01 | 2.94 |
| 2017 | 130.97 | 203.18 | 21.32 |
| 2016 | 123.76 | 395.39 | 26.11 |
| 2015 | 443.51 | 538.2 | 316.08 |
| 2014 | 13.2 | 24.43 | 7.19 |
| 2013 | 15.08 | 20.04 | 7.39 |
| 2012 | 14.02 | 16.15 | 11.7 |
| 2011 | 9.69 | 17.98 | 4.97 |
| 2010 | 5.11 | 6.64 | 3.88 |
| 2009 | 2.08 | 6.89 | 0.5 |
| 2008 | 0.76 | 1.06 | 0.6 |
| 2007 | 0.81 | 1.09 | 0.45 |
| 2006 | 0.44 | 0.5 | 0.36 |
| 2005 | 0.39 | 0.57 | 0.29 |
| 2004 | 0.64 | 1.02 | 0.44 |