| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2026 | 7.59 | 8.48 | 6.83 |
| 2025 | 7.72 | 13.21 | 4.28 |
| 2024 | 12.2 | 23.62 | 6.81 |
| 2023 | 17.07 | 32.61 | 3.06 |
| 2022 | 3.67 | 5.3 | 1.73 |
| 2021 | 2.52 | 3.47 | 1.74 |
| 2020 | 7.45 | 11.67 | 2.92 |
| 2019 | 11.64 | 17.17 | 8.84 |
| 2018 | 57.85 | 151.18 | 11.35 |
| 2017 | 173.47 | 293.45 | 112.5 |
| 2016 | 288.38 | 417.19 | 197.69 |
| 2015 | 313.05 | 664.5 | 180.32 |
| 2014 | 218.03 | 347.62 | 99.05 |
| 2013 | 68.13 | 109.7 | 24.47 |
| 2012 | 16.19 | 25.87 | 10.85 |
| 2011 | 26.41 | 36.68 | 11.77 |
| 2010 | 16.3 | 27.95 | 10.93 |
| 2009 | 8.86 | 13.41 | 3.03 |
| 2008 | 5.32 | 11.34 | 2.21 |
| 2007 | 9.39 | 18.38 | 3.92 |
| 2006 | 4.72 | 6.04 | 3.76 |
| 2005 | 1.39 | 4.98 | 0.11 |
| 2004 | 0.54 | 1.5 | 0.17 |