| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2026 | 2.68 | 2.75 | 2.64 |
| 2025 | 2.21 | 2.91 | 1.6 |
| 2024 | 1.65 | 2.45 | 1.3 |
| 2023 | 1.58 | 2.17 | 0.98 |
| 2022 | 1.34 | 1.62 | 0.98 |
| 2021 | 1.45 | 2.34 | 0.92 |
| 2020 | 1.3 | 1.82 | 0.82 |
| 2019 | 0.7 | 1.3 | 0.34 |
| 2018 | 0.54 | 0.87 | 0.32 |
| 2017 | 4.88 | 13.5 | 0.78 |
| 2016 | 6.25 | 13.56 | 2.76 |
| 2015 | 2.73 | 5.41 | 1.68 |
| 2014 | 1.72 | 2.11 | 1.52 |
| 2013 | 2.1 | 2.64 | 1.64 |
| 2012 | 2.43 | 3.31 | 1.9 |
| 2011 | 4.99 | 5.79 | 2.47 |
| 2010 | 6.73 | 9.42 | 4.93 |
| 2009 | 3.75 | 7.27 | 1.53 |
| 2008 | 2.53 | 4.74 | 1.14 |
| 2007 | 3.48 | 6.1 | 1.6 |
| 2006 | 1.71 | 2.46 | 1.38 |
| 2005 | 1.59 | 2.27 | 1.27 |
| 2004 | 2.77 | 4.51 | 1.42 |