| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 11.67 | 14.03 | 9.35 |
| 2024 | 11.3 | 16.87 | 7.66 |
| 2023 | 10.59 | 17.2 | 8.35 |
| 2022 | 7.84 | 11.63 | 4.93 |
| 2021 | 7.17 | 8.7 | 5.94 |
| 2020 | 6.12 | 8.13 | 3.76 |
| 2019 | 3.06 | 3.9 | 1.99 |
| 2018 | 1.53 | 2.26 | 1.07 |
| 2017 | 1.29 | 1.59 | 0.98 |
| 2016 | 1.61 | 1.86 | 1.23 |
| 2015 | 1.65 | 2.32 | 0.95 |
| 2014 | 1.48 | 1.86 | 1.11 |
| 2013 | 1.5 | 2.12 | 1.13 |
| 2012 | 1.67 | 2.23 | 1.27 |
| 2011 | 2.54 | 4.05 | 1.45 |
| 2010 | 1.45 | 2.03 | 1.03 |
| 2009 | 1.12 | 1.84 | 0.51 |
| 2008 | 1.11 | 1.93 | 0.45 |
| 2007 | 1.52 | 2.1 | 1.08 |
| 2006 | 1.23 | 1.38 | 1.03 |
| 2005 | 0.99 | 1.32 | 0.72 |
| 2004 | 1.08 | 1.65 | 0.75 |