| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 3.46 | 4.53 | 2.72 |
| 2024 | 2.84 | 4.21 | 2.08 |
| 2023 | 4.55 | 7.21 | 3.37 |
| 2022 | 5.77 | 8.28 | 4.48 |
| 2021 | 4.98 | 6.16 | 3.95 |
| 2020 | 5.95 | 7.93 | 4.96 |
| 2019 | 11.23 | 15.68 | 5.84 |
| 2018 | 11.23 | 13.39 | 7.91 |
| 2017 | 52.77 | 121.31 | 12.73 |
| 2016 | 82.46 | 121.31 | 28.74 |
| 2015 | 32.33 | 52.01 | 18.45 |
| 2014 | 15.77 | 27.38 | 6.79 |
| 2013 | 6.93 | 9.06 | 5.39 |
| 2012 | 7.32 | 9.82 | 5.79 |
| 2011 | 10.7 | 16.24 | 6.31 |
| 2010 | 9.36 | 11.39 | 6.79 |
| 2009 | 6.89 | 9.94 | 2.43 |
| 2008 | 3.81 | 6.39 | 1.91 |
| 2007 | 6.32 | 9.91 | 4.23 |
| 2006 | 6.06 | 10.03 | 4.33 |
| 2005 | 7.09 | 10.11 | 4.72 |
| 2004 | 11.95 | 15.11 | 9.86 |
| 2003 | 15.13 | 16.95 | 11.8 |
| 2002 | 15.15 | 18.28 | 8.86 |
| 2001 | 18.11 | 20.28 | 14.72 |
| 2000 | 12.08 | 18.29 | 10.07 |
| 1999 | 7.87 | 11.39 | 5.44 |
| 1998 | 5.42 | 6.68 | 3.99 |
| 1997 | 5.24 | 7.03 | 3.77 |