| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2026 | 6.42 | 9.65 | 4.73 |
| 2025 | 5.26 | 7.97 | 3.25 |
| 2024 | 2.17 | 3.81 | 1.56 |
| 2023 | 2.95 | 3.61 | 2.49 |
| 2022 | 3.42 | 4.95 | 2.68 |
| 2021 | 10.36 | 22.15 | 3.26 |
| 2020 | 25.47 | 32.33 | 17.82 |
| 2019 | 18.23 | 23.02 | 14.9 |
| 2018 | 21.81 | 27.97 | 11.69 |
| 2017 | 25.23 | 33.17 | 19.41 |
| 2016 | 29.27 | 39.83 | 23.99 |
| 2015 | 89.94 | 221.9 | 33.38 |
| 2014 | 38.12 | 101.05 | 9.78 |
| 2013 | 6.32 | 11.87 | 3.81 |
| 2012 | 3.24 | 4.15 | 2.49 |
| 2011 | 5.11 | 7.67 | 2.79 |
| 2010 | 3.77 | 4.59 | 2.76 |
| 2009 | 3.07 | 4.03 | 2.15 |
| 2008 | 3.15 | 5.74 | 1.49 |
| 2007 | 4.2 | 6.94 | 2.3 |
| 2006 | 2.08 | 2.54 | 1.58 |
| 2005 | 1.69 | 2.35 | 1.37 |
| 2004 | 2.92 | 5.77 | 1.63 |