| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 7.91 | 9.87 | 6.02 |
| 2024 | 3.64 | 8.63 | 2.44 |
| 2023 | 3.54 | 4.11 | 1.45 |
| 2022 | 134.36 | 153.62 | 111.55 |
| 2021 | 120.13 | 320.47 | 1.92 |
| 2020 | 3.1 | 4.9 | 2.45 |
| 2019 | 2.94 | 6.48 | 1.1 |
| 2018 | 3.92 | 8.04 | 1.3 |
| 2017 | 8.48 | 9.96 | 8.04 |
| 2016 | 11.32 | 16.16 | 9.28 |
| 2015 | 29.64 | 95.64 | 7.96 |
| 2014 | 6.8 | 13.14 | 4.29 |
| 2013 | 4.51 | 5.09 | 3.77 |
| 2012 | 4.83 | 5.78 | 3.78 |
| 2011 | 5.66 | 7.61 | 4.28 |
| 2010 | 5.43 | 7 | 4.14 |
| 2009 | 4.42 | 6.31 | 2.93 |
| 2008 | 4.28 | 7.1 | 2.19 |
| 2007 | 5.21 | 8.25 | 2.13 |
| 2006 | 1.95 | 2.57 | 1.55 |
| 2005 | 2.05 | 2.44 | 1.6 |
| 2004 | 3.23 | 4.55 | 2.34 |
| 2003 | 4.82 | 6.61 | 3.28 |
| 2002 | 6.49 | 7.56 | 4.4 |
| 2001 | 8.16 | 10.28 | 5.99 |
| 2000 | 7.31 | 9.29 | 5.04 |
| 1999 | 4.93 | 6.27 | 3.99 |
| 1998 | 5.33 | 6.85 | 4.1 |
| 1997 | 4.46 | 6.78 | 2.54 |