| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 1.37 | 1.49 | 1.23 |
| 2024 | 1.53 | 1.79 | 1.28 |
| 2023 | 1.71 | 2.4 | 1.41 |
| 2022 | 1.59 | 1.97 | 1.41 |
| 2021 | 2.24 | 3.31 | 1.83 |
| 2020 | 2.68 | 4.18 | 1.86 |
| 2019 | 2.03 | 2.43 | 1.71 |
| 2018 | 2.49 | 3.01 | 2.01 |
| 2017 | 4.5 | 7.65 | 2.46 |
| 2016 | 4.51 | 6.61 | 4.16 |
| 2015 | 6.72 | 10.23 | 4.94 |
| 2014 | 5.16 | 6.73 | 4.22 |
| 2013 | 4.41 | 5.53 | 3.59 |
| 2012 | 4.06 | 4.65 | 3.45 |
| 2011 | 6.35 | 9.06 | 3.82 |
| 2010 | 10.75 | 14.03 | 8.47 |
| 2009 | 9.55 | 12.79 | 7.94 |
| 2008 | 9.71 | 14.12 | 6.59 |
| 2007 | 8.68 | 12.52 | 3.91 |
| 2006 | 3.19 | 5.72 | 1.76 |
| 2005 | 1.71 | 1.96 | 1.46 |
| 2004 | 2.43 | 3.59 | 1.84 |
| 2003 | 4.73 | 12.87 | 2.5 |