| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 38.13 | 42.07 | 32.74 |
| 2024 | 37.97 | 49.29 | 24.82 |
| 2023 | 21.47 | 34.36 | 12.68 |
| 2022 | 16.38 | 23.92 | 11.44 |
| 2021 | 26.81 | 103.33 | 1.64 |
| 2020 | 2.17 | 2.92 | 1.76 |
| 2019 | 2.07 | 3.11 | 0.77 |
| 2018 | 1.35 | 2.2 | 0.82 |
| 2017 | 2.53 | 3.19 | 1.97 |
| 2016 | 2.65 | 3.03 | 2.13 |
| 2015 | 3.53 | 6.68 | 2.32 |
| 2014 | 7.72 | 18.23 | 2.53 |
| 2013 | 6.65 | 8.06 | 5.07 |
| 2012 | 6.49 | 8.14 | 4.89 |
| 2011 | 11.32 | 17.04 | 6.36 |
| 2010 | 10.64 | 17.57 | 6.37 |
| 2009 | 8.41 | 14.19 | 1.99 |
| 2008 | 5.78 | 12.04 | 1.42 |
| 2007 | 11.68 | 24.54 | 4.64 |
| 2006 | 5.96 | 13.09 | 2.87 |
| 2005 | 2.7 | 3.3 | 2.01 |
| 2004 | 2.03 | 2.48 | 1.1 |
| 2003 | 1.87 | 2.22 | 1.5 |
| 2002 | 4.8 | 8.68 | 2.47 |