| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 11.48 | 12.82 | 10.09 |
| 2024 | 12.58 | 18.07 | 9.98 |
| 2023 | 11.09 | 13.53 | 9.23 |
| 2022 | 9.75 | 13.41 | 8.14 |
| 2021 | 9.91 | 11.87 | 8.07 |
| 2020 | 7.96 | 11.54 | 4.24 |
| 2019 | 3.51 | 5.2 | 1.93 |
| 2018 | 2.47 | 3.39 | 1.73 |
| 2017 | 2.49 | 3.56 | 1.8 |
| 2016 | 2.56 | 3.17 | 2.09 |
| 2015 | 4.64 | 7.49 | 2.58 |
| 2014 | 3.46 | 5.41 | 2.74 |
| 2013 | 2.91 | 4.27 | 1.92 |
| 2012 | 2.5 | 3.93 | 1.86 |
| 2011 | 3.48 | 4.74 | 1.96 |
| 2010 | 5.26 | 6.99 | 4.26 |
| 2009 | 3.36 | 6.58 | 1.34 |
| 2008 | 3.15 | 8.47 | 0.96 |
| 2007 | 3.01 | 5.55 | 1.04 |
| 2006 | 1.16 | 1.42 | 0.91 |
| 2005 | 1.55 | 2.13 | 1.21 |
| 2004 | 2.48 | 4.12 | 1.38 |