| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 2.38 | 2.77 | 2.08 |
| 2024 | 2.16 | 2.69 | 1.8 |
| 2023 | 2.8 | 3.59 | 2.24 |
| 2022 | 3 | 3.96 | 2.28 |
| 2021 | 2.85 | 4.18 | 2.08 |
| 2020 | 2.71 | 3.71 | 2.12 |
| 2019 | 3.07 | 4.64 | 2.38 |
| 2018 | 3.49 | 4.97 | 2.51 |
| 2017 | 6.29 | 8.75 | 4.77 |
| 2016 | 7.93 | 11.13 | 6.25 |
| 2015 | 9.3 | 16.89 | 5.27 |
| 2014 | 4.48 | 7.88 | 3.07 |
| 2013 | 3.54 | 4.78 | 2.61 |
| 2012 | 3.2 | 4.03 | 2.49 |
| 2011 | 4.92 | 7.1 | 2.8 |
| 2010 | 4.05 | 5.41 | 2.94 |
| 2009 | 2.75 | 3.51 | 1.63 |
| 2008 | 3.25 | 5.71 | 1.08 |
| 2007 | 4.91 | 8.25 | 2.04 |
| 2006 | 2.16 | 3.16 | 1.77 |
| 2005 | 2.14 | 3.32 | 1.25 |
| 2004 | 4.39 | 8.24 | 2.62 |
| 2003 | 4.05 | 4.93 | 2.11 |
| 2002 | 4.2 | 4.96 | 3.55 |
| 2001 | 5.68 | 6.87 | 4.26 |
| 2000 | 5.35 | 6.22 | 4.63 |