| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 1.32 | 1.68 | 1.03 |
| 2023 | 1.22 | 1.36 | 1.11 |
| 2022 | 1.23 | 1.43 | 1.07 |
| 2021 | 1.33 | 1.92 | 1.02 |
| 2020 | 1.28 | 1.56 | 1.03 |
| 2019 | 1.29 | 1.51 | 1.03 |
| 2018 | 1.51 | 2.32 | 1.03 |
| 2017 | 2.01 | 2.84 | 1.43 |
| 2016 | 1.52 | 3.08 | 0.66 |
| 2015 | 1.04 | 1.71 | 0.68 |
| 2014 | 0.88 | 1.12 | 0.71 |
| 2013 | 1.37 | 1.99 | 0.9 |
| 2012 | 2.67 | 4.23 | 1.44 |
| 2011 | 5.5 | 8.05 | 3.09 |
| 2010 | 5.31 | 7.76 | 3.46 |
| 2009 | 4.45 | 7.99 | 1.48 |
| 2008 | 2.9 | 5.79 | 0.92 |
| 2007 | 5.34 | 8.04 | 2.92 |
| 2006 | 2.81 | 3.99 | 1.5 |
| 2005 | 1.86 | 2.42 | 1.53 |