| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 25.61 | 33.98 | 15.44 |
| 2023 | 21.39 | 38.42 | 9.15 |
| 2022 | 9.06 | 14.61 | 5.5 |
| 2021 | 49.88 | 93.47 | 14.78 |
| 2020 | 11.66 | 26.57 | 7.51 |
| 2019 | 10.09 | 15.65 | 6.61 |
| 2018 | 10.39 | 16.12 | 6.16 |
| 2017 | 21.2 | 34.66 | 13.47 |
| 2016 | 42.76 | 56.79 | 28.66 |
| 2015 | 147.18 | 590.75 | 28.8 |
| 2014 | 13.94 | 29.5 | 7.52 |
| 2013 | 8.19 | 10.1 | 6.21 |
| 2012 | 8.07 | 11.2 | 6.13 |
| 2011 | 12.61 | 20.29 | 6.78 |
| 2010 | 12.86 | 21.96 | 6.73 |
| 2009 | 5.38 | 8.02 | 2.5 |
| 2008 | 3.55 | 6.25 | 1.71 |
| 2007 | 5.12 | 6.39 | 3.98 |
| 2006 | 1.15 | 1.27 | 0.8 |
| 2005 | 1.17 | 1.84 | 0.79 |
| 2004 | 2.01 | 2.63 | 1.51 |
| 2003 | 2.17 | 2.88 | 1.55 |
| 2002 | 3.07 | 3.35 | 2.55 |
| 2001 | 3.78 | 4.49 | 2.75 |
| 2000 | 3.59 | 4.68 | 2.82 |