| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 2.97 | 4.36 | 1.58 |
| 2023 | 2.81 | 3.69 | 2.17 |
| 2022 | 3.68 | 5.98 | 2.54 |
| 2021 | 8.25 | 16.66 | 2.77 |
| 2020 | 1.34 | 3.55 | 0.7 |
| 2019 | 1.78 | 4.17 | 0.73 |
| 2018 | 484.9 | 1773.56 | 2.7 |
| 2017 | 970.88 | 1847.17 | 442.01 |
| 2016 | 796.15 | 1271.39 | 269.63 |
| 2015 | 288.35 | 514.02 | 74.14 |
| 2014 | 53.5 | 95.23 | 10.74 |
| 2013 | 10.99 | 17.3 | 7 |
| 2012 | 8.46 | 13.57 | 6.15 |
| 2011 | 22.69 | 36.4 | 11.39 |
| 2010 | 24.04 | 40.38 | 15.74 |
| 2009 | 22.54 | 39.34 | 14.72 |
| 2008 | 32.24 | 71.21 | 12.26 |
| 2007 | 50.86 | 80.88 | 10.96 |
| 2006 | 18.42 | 49.81 | 4.25 |
| 2005 | 12.78 | 43.77 | 1.42 |
| 2004 | 3.41 | 7.02 | 2.17 |