| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 9.74 | 12.91 | 7.87 |
| 2024 | 8.44 | 11.28 | 5.96 |
| 2023 | 14.54 | 22.81 | 10.67 |
| 2022 | 16.78 | 23.11 | 10.32 |
| 2021 | 19.87 | 24.41 | 15.49 |
| 2020 | 13.71 | 19.52 | 10.82 |
| 2019 | 18.64 | 32.12 | 12.41 |
| 2018 | 34.24 | 57.11 | 16.75 |
| 2017 | 75.5 | 121.87 | 46.88 |
| 2016 | 96.42 | 125.07 | 58.42 |
| 2015 | 71.57 | 137.3 | 33.64 |
| 2014 | 24.57 | 42.92 | 12.46 |
| 2013 | 16.17 | 19.32 | 13.67 |
| 2012 | 16.25 | 22.34 | 11.96 |
| 2011 | 38.88 | 53.49 | 14.87 |
| 2010 | 22.43 | 43.67 | 11.71 |
| 2009 | 22.68 | 25.77 | 18.18 |
| 2008 | 22.46 | 37.65 | 18.49 |
| 2007 | 33.31 | 55.34 | 18.09 |
| 2006 | 8.79 | 18.09 | 3.77 |
| 2005 | 1.79 | 4.43 | 0.32 |
| 2004 | 1.2 | 5.72 | 0.57 |