| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 14.47 | 16.76 | 11.98 |
| 2024 | 12.15 | 23.55 | 6.75 |
| 2023 | 11.66 | 17.62 | 7.53 |
| 2022 | 14.78 | 23.66 | 9.1 |
| 2021 | 6.25 | 16.06 | 2.22 |
| 2020 | 2.83 | 4.07 | 2.14 |
| 2019 | 3.78 | 7.76 | 2.36 |
| 2018 | 3.22 | 5.6 | 1.11 |
| 2017 | 5.09 | 7 | 3.78 |
| 2016 | 6.33 | 8.45 | 5.15 |
| 2015 | 17.08 | 40.55 | 6.69 |
| 2014 | 9.41 | 26.41 | 4.37 |
| 2013 | 4.61 | 5.38 | 4.04 |
| 2012 | 4.82 | 6.33 | 3.54 |
| 2011 | 6.61 | 9.17 | 4.61 |
| 2010 | 6.49 | 8.05 | 5.45 |
| 2009 | 4.57 | 9.02 | 1.46 |
| 2008 | 3.25 | 7.43 | 1.11 |
| 2007 | 6.7 | 8.65 | 5.06 |
| 2006 | 98.66 | 232.95 | 12.33 |
| 2005 | 10.38 | 19.93 | 5.62 |
| 2004 | 7.06 | 8.77 | 4.96 |
| 2003 | 9.43 | 11.77 | 5.6 |
| 2002 | 9.92 | 11.79 | 6.08 |
| 2001 | 9.1 | 12 | 4.72 |
| 2000 | 7.85 | 13.01 | 4.26 |
| 1999 | 4.6 | 7.3 | 3.3 |
| 1998 | 4.1 | 5.94 | 2.7 |
| 1997 | 3.4 | 4.98 | 2.12 |