| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 12.72 | 14.08 | 11.41 |
| 2024 | 11.21 | 16.38 | 6.6 |
| 2023 | 13.78 | 27.29 | 6.65 |
| 2022 | 32.15 | 50.27 | 20.26 |
| 2021 | 36.04 | 95.31 | 14.75 |
| 2020 | 8.12 | 15.65 | 5.31 |
| 2019 | 7.51 | 9.23 | 5.5 |
| 2018 | 8.3 | 12.37 | 4.75 |
| 2017 | 13.79 | 21.51 | 10.95 |
| 2016 | 12.91 | 16.21 | 9.58 |
| 2015 | 13.22 | 22.13 | 6.82 |
| 2014 | 9.09 | 11.51 | 7.28 |
| 2013 | 11.01 | 14.12 | 8.94 |
| 2012 | 12.9 | 16.32 | 8.88 |
| 2011 | 18.47 | 24.27 | 10.83 |
| 2010 | 26.38 | 33.42 | 20.9 |
| 2009 | 16.9 | 32.38 | 3.83 |
| 2008 | 7.7 | 18.96 | 2.59 |
| 2007 | 16.14 | 28.76 | 9.47 |
| 2006 | 7.27 | 11.11 | 3.92 |
| 2005 | 2.92 | 3.9 | 2.09 |
| 2004 | 3.62 | 6.53 | 2.34 |