| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 1.37 | 1.64 | 1.27 |
| 2024 | 1.17 | 1.61 | 0.94 |
| 2023 | 1.32 | 1.59 | 1.11 |
| 2022 | 1.77 | 2.43 | 1.14 |
| 2021 | 2.21 | 2.97 | 1.8 |
| 2020 | 2.69 | 3.39 | 2.02 |
| 2019 | 1.78 | 2.38 | 1.29 |
| 2018 | 1.88 | 3.04 | 1.3 |
| 2017 | 2.7 | 4.3 | 1.76 |
| 2016 | 2.71 | 4.69 | 1.98 |
| 2015 | 3.14 | 4.15 | 2.02 |
| 2014 | 1.89 | 2.68 | 1.2 |
| 2013 | 34.67 | 82.97 | 2.29 |
| 2012 | 0 | ||
| 2011 | 0 | ||
| 2010 | 0 | ||
| 2009 | 0 | ||
| 2008 | 0 | ||
| 2007 | 60.45 | 151.57 | 32.6 |
| 2006 | 109.11 | 318.27 | 19.91 |
| 2005 | 95.98 | 318.27 | 5.77 |
| 2004 | 17.27 | 66.18 | 8.32 |