| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 2.09 | 2.47 | 1.88 |
| 2024 | 2 | 2.96 | 1.58 |
| 2023 | 2.45 | 3.58 | 1.74 |
| 2022 | 2.06 | 3.27 | 1.76 |
| 2021 | 2.43 | 3.26 | 2.05 |
| 2020 | 2.83 | 3.37 | 2.26 |
| 2019 | 3.28 | 4.12 | 2.68 |
| 2018 | 3.06 | 4.18 | 2.25 |
| 2017 | 89.92 | 365.4 | 2.46 |
| 2016 | 5.74 | 10.53 | 2.67 |
| 2015 | 4 | 7.04 | 2.58 |
| 2014 | 1.88 | 3.08 | 1.15 |
| 2013 | 1.35 | 1.77 | 1.11 |
| 2012 | 1.74 | 2.4 | 1.36 |
| 2011 | 3.17 | 4.82 | 1.72 |
| 2010 | 2.5 | 3.43 | 1.69 |
| 2009 | 2.71 | 3.65 | 1.47 |
| 2008 | 3.68 | 10.04 | 1.14 |
| 2007 | 8.85 | 15.8 | 4.93 |
| 2006 | 4.34 | 6.46 | 2.92 |
| 2005 | 3.21 | 4.18 | 2.39 |
| 2004 | 3.25 | 5.47 | 2.23 |