| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 2.12 | 3.34 | 1.36 |
| 2024 | 1.16 | 1.95 | 0.66 |
| 2023 | 1.18 | 1.41 | 1.01 |
| 2022 | 1.23 | 1.68 | 0.84 |
| 2021 | 0.95 | 1.63 | 0.75 |
| 2020 | 1.16 | 1.43 | 1.03 |
| 2019 | 1.47 | 2.48 | 1.02 |
| 2018 | 1.2 | 1.64 | 0.95 |
| 2017 | 2.03 | 2.61 | 1.52 |
| 2016 | 2.28 | 2.85 | 1.59 |
| 2015 | 2.48 | 4.23 | 1.5 |
| 2014 | 1.97 | 2.83 | 1.4 |
| 2013 | 1.3 | 1.75 | 0.94 |
| 2012 | 1.06 | 1.32 | 0.84 |
| 2011 | 1.8 | 2.33 | 1.34 |
| 2010 | 2.43 | 2.95 | 1.89 |
| 2009 | 2.27 | 3.17 | 0.97 |
| 2008 | 1.79 | 3.51 | 0.7 |
| 2007 | 2.68 | 3.97 | 1.21 |
| 2006 | 1.31 | 1.94 | 0.96 |
| 2005 | 1.02 | 1.31 | 0.81 |
| 2004 | 1.34 | 2.47 | 0.85 |