| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 12.53 | 14.96 | 10.94 |
| 2024 | 9.18 | 12.89 | 7.11 |
| 2023 | 3.75 | 4.88 | 2.39 |
| 2022 | 2.35 | 4.41 | 0.97 |
| 2021 | 1.68 | 2.48 | 0.82 |
| 2020 | 1.31 | 2.14 | 0.95 |
| 2019 | 1.55 | 2.59 | 1.09 |
| 2018 | 2.49 | 3.66 | 1.43 |
| 2017 | 3.27 | 3.64 | 2.44 |
| 2016 | 7.69 | 18.57 | 3.46 |
| 2015 | 12.27 | 30.72 | 4.44 |
| 2014 | 11.3 | 14.66 | 7.48 |
| 2013 | 7.76 | 8.98 | 6.18 |
| 2012 | 6.8 | 8.33 | 5.77 |
| 2011 | 9.73 | 13.79 | 6.33 |
| 2010 | 10.12 | 14.06 | 7.2 |
| 2009 | 9.84 | 13.29 | 5.86 |
| 2008 | 13.13 | 23.42 | 4.22 |
| 2007 | 42.78 | 84.85 | 19.82 |
| 2006 | 26.98 | 29.33 | 25.23 |
| 2005 | 18.59 | 39.16 | 1.88 |
| 2004 | 3.57 | 6.69 | 2.09 |
| 2003 | 5.01 | 6.06 | 2.44 |
| 2002 | 3.55 | 4.02 | 2.81 |
| 2001 | 4.61 | 5.57 | 3.5 |
| 2000 | 6.72 | 8.79 | 4.69 |
| 1999 | 4.67 | 5.59 | 3.67 |