| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 49.9 | 60.4 | 39.66 |
| 2024 | 24.37 | 51.39 | 15.91 |
| 2023 | 25.34 | 32.56 | 14.75 |
| 2022 | 13.47 | 20.21 | 1.76 |
| 2021 | 1.91 | 3.91 | 0.97 |
| 2020 | 2.23 | 7.97 | 0.36 |
| 2019 | 0.88 | 1.36 | 0.58 |
| 2018 | 0.79 | 1.02 | 0.48 |
| 2017 | 2.02 | 4.37 | 1.02 |
| 2016 | 18.67 | 34.86 | 3.92 |
| 2015 | 18.49 | 34.1 | 7.72 |
| 2014 | 16.16 | 23.07 | 10.72 |
| 2013 | 9.94 | 14.62 | 3.94 |
| 2012 | 1.66 | 4.46 | 0.64 |
| 2011 | 1.48 | 1.92 | 0.68 |
| 2010 | 1.84 | 2.37 | 1.48 |
| 2009 | 1.69 | 3.16 | 1.21 |
| 2008 | 1.58 | 1.7 | 1.46 |
| 2007 | 2.37 | 3.23 | 1.58 |
| 2006 | 1.09 | 1.9 | 0.47 |
| 2005 | 0.48 | 0.71 | 0.22 |
| 2004 | 0.55 | 0.98 | 0.35 |