| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 32.19 | 38.25 | 22.72 |
| 2024 | 36.58 | 48.43 | 28.95 |
| 2023 | 33.33 | 39.16 | 27.76 |
| 2022 | 29.37 | 42.32 | 20.59 |
| 2021 | 42.64 | 62.63 | 29.29 |
| 2020 | 41.81 | 69.34 | 16.57 |
| 2019 | 10.45 | 18.36 | 7.09 |
| 2018 | 9.4 | 13.22 | 6.96 |
| 2017 | 15.69 | 29.67 | 8.6 |
| 2016 | 25.18 | 32.48 | 17.37 |
| 2015 | 18.7 | 35.61 | 9.4 |
| 2014 | 10.72 | 13.29 | 8.75 |
| 2013 | 11.22 | 15.17 | 8.78 |
| 2012 | 7.75 | 10.9 | 3.24 |
| 2011 | 11.87 | 29.08 | 3.28 |
| 2010 | 33.58 | 57.12 | 25.16 |
| 2009 | 18.49 | 30.7 | 10 |
| 2008 | 14.64 | 22.22 | 8.43 |
| 2007 | 17.2 | 25.72 | 8.24 |
| 2006 | 9.37 | 14.69 | 6.85 |
| 2005 | 6.78 | 8.71 | 5.3 |
| 2004 | 10.4 | 15.59 | 6.39 |