| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2026 | 51.3 | 63.92 | 43.2 |
| 2025 | 38.39 | 53.43 | 33.17 |
| 2024 | 32.16 | 50.76 | 24.13 |
| 2023 | 34.75 | 42.77 | 28.1 |
| 2022 | 29.39 | 45.4 | 21.62 |
| 2021 | 25.68 | 32.2 | 20.62 |
| 2020 | 36.5 | 50.7 | 30.14 |
| 2019 | 37.67 | 47.26 | 29.95 |
| 2018 | 35.09 | 43.47 | 27.37 |
| 2017 | 61.25 | 100.9 | 39.18 |
| 2016 | 67 | 97.45 | 42.71 |
| 2015 | 52.9 | 78.01 | 27.69 |
| 2014 | 24.93 | 34.91 | 16.62 |
| 2013 | 14.48 | 22.62 | 11.03 |
| 2012 | 13.24 | 18.17 | 10.71 |
| 2011 | 21.55 | 29.92 | 13.04 |
| 2010 | 22.64 | 29.48 | 17.33 |
| 2009 | 11.57 | 19.77 | 6.26 |
| 2008 | 10.38 | 16.97 | 5.42 |
| 2007 | 12.66 | 20.84 | 5.08 |
| 2006 | 5.1 | 6.81 | 3.73 |
| 2005 | 3.7 | 5.14 | 2.13 |
| 2004 | 3.75 | 4.89 | 2.98 |