| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 1.03 | 1.34 | 0.75 |
| 2023 | 2.42 | 5.15 | 0.94 |
| 2022 | 5.77 | 10.2 | 3.95 |
| 2021 | 9.17 | 26.12 | 4.04 |
| 2020 | 43.66 | 132.37 | 5.11 |
| 2019 | 4.66 | 7.78 | 2.85 |
| 2018 | 16.59 | 86.59 | 2.8 |
| 2017 | 56.3 | 101.34 | 30.54 |
| 2016 | 26.77 | 34.78 | 16.64 |
| 2015 | 17.89 | 35.28 | 7.02 |
| 2014 | 7.65 | 10.55 | 5.59 |
| 2013 | 6.9 | 9.82 | 5.07 |
| 2012 | 9.59 | 12.29 | 7.1 |
| 2011 | 15.85 | 21.56 | 8.41 |
| 2010 | 17.93 | 25.47 | 13.69 |
| 2009 | 12.2 | 20.96 | 4.67 |
| 2008 | 8.16 | 14.05 | 3.5 |
| 2007 | 9.55 | 15 | 5.56 |
| 2006 | 6.63 | 10.32 | 4.38 |
| 2005 | 11.77 | 13.33 | 10.13 |
| 2004 | 15.06 | 20.14 | 12 |