| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 24.51 | 28.79 | 22.54 |
| 2024 | 19.92 | 42.8 | 9.36 |
| 2023 | 12.82 | 14.19 | 11.59 |
| 2022 | 13.94 | 17.2 | 10.46 |
| 2021 | 13 | 17.85 | 10.78 |
| 2020 | 13.82 | 21.08 | 7.42 |
| 2019 | 7.96 | 11.88 | 4.64 |
| 2018 | 16.32 | 23.83 | 4.57 |
| 2017 | 31.48 | 46.53 | 20.3 |
| 2016 | 23.46 | 36.08 | 8.93 |
| 2015 | 27.59 | 93.26 | 10.06 |
| 2014 | 51.81 | 101.17 | 1.73 |
| 2013 | 1.83 | 2.55 | 1.38 |
| 2012 | 1.82 | 2.46 | 1.23 |
| 2011 | 4.52 | 6.7 | 1.97 |
| 2010 | 7.09 | 9.73 | 5.12 |
| 2009 | 9.73 | 12.41 | 6.72 |
| 2008 | 11.58 | 18.8 | 4.18 |
| 2007 | 11.07 | 21.15 | 3.91 |
| 2006 | 5.23 | 9.19 | 3.38 |
| 2005 | 3.14 | 4.85 | 1.91 |
| 2004 | 2.45 | 3.02 | 1.79 |
| 2003 | 2.58 | 3.05 | 2.1 |
| 2002 | 3.66 | 4.21 | 2.45 |