| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 105.43 | 448.71 | 6.74 |
| 2024 | 6.79 | 11.46 | 4.61 |
| 2023 | 9.48 | 12.48 | 6.99 |
| 2022 | 10.75 | 13.48 | 7.63 |
| 2021 | 22.72 | 43.56 | 11.39 |
| 2020 | 11.26 | 16.45 | 7.93 |
| 2019 | 11.77 | 14.21 | 10.07 |
| 2018 | 18.1 | 27 | 11.12 |
| 2017 | 26.65 | 36.36 | 20.8 |
| 2016 | 28.64 | 37.11 | 21.98 |
| 2015 | 31.66 | 46.81 | 17.95 |
| 2014 | 16.78 | 23.2 | 12.17 |
| 2013 | 12.79 | 17.73 | 8.14 |
| 2012 | 7.94 | 9.74 | 5.91 |
| 2011 | 10.29 | 13.05 | 6.3 |
| 2010 | 9.73 | 12.48 | 7.55 |
| 2009 | 7.65 | 12.16 | 2.98 |
| 2008 | 5.14 | 10.39 | 2.18 |
| 2007 | 7.93 | 11.69 | 4.07 |
| 2006 | 4.12 | 4.87 | 3.5 |
| 2005 | 3.69 | 5.64 | 2.53 |
| 2004 | 5.01 | 6.8 | 2.96 |
| 2003 | 8.26 | 10.84 | 5.23 |
| 2002 | 11.53 | 13.57 | 8.68 |
| 2001 | 19.6 | 23.45 | 14.55 |
| 2000 | 9.89 | 12.73 | 8.25 |
| 1999 | 6.1 | 8.57 | 3.56 |
| 1998 | 4.17 | 5.13 | 3.16 |
| 1997 | 3.53 | 5.05 | 2.48 |