| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 39.99 | 43.55 | 36.38 |
| 2024 | 37.99 | 50.46 | 29 |
| 2023 | 46.39 | 53.28 | 35.6 |
| 2022 | 32.34 | 41.04 | 24.47 |
| 2021 | 24.95 | 40.84 | 16.58 |
| 2020 | 14.08 | 18.63 | 9.5 |
| 2019 | 10.14 | 14.05 | 6.94 |
| 2018 | 15.24 | 23.14 | 7.71 |
| 2017 | 30.89 | 46.73 | 23.14 |
| 2016 | 28.34 | 51.22 | 11.11 |
| 2015 | 16.79 | 30.84 | 10.59 |
| 2014 | 6.76 | 14.13 | 4.37 |
| 2013 | 6.41 | 11.09 | 4.77 |
| 2012 | 9.53 | 11.97 | 6.86 |
| 2011 | 12.95 | 23.39 | 7.12 |
| 2010 | 21.39 | 28.63 | 16.54 |
| 2009 | 8.85 | 18.81 | 3.75 |
| 2008 | 5.86 | 12.26 | 2.01 |
| 2007 | 8.98 | 13.08 | 3.7 |
| 2006 | 1.87 | 3.96 | 0.6 |
| 2005 | 0.71 | 1.06 | 0.31 |
| 2004 | 0.57 | 0.99 | 0.32 |