| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 13.96 | 16.58 | 12.13 |
| 2024 | 3.6 | 16.52 | 1.93 |
| 2023 | 2.44 | 3.03 | 1.65 |
| 2022 | 1.77 | 2.86 | 1.22 |
| 2021 | 1.73 | 2.89 | 1.12 |
| 2020 | 1.28 | 1.74 | 1 |
| 2019 | 1.43 | 2.08 | 1.07 |
| 2018 | 2.44 | 4.16 | 1.39 |
| 2017 | 3.57 | 4.74 | 2.44 |
| 2016 | 0 | -2.29 | |
| 2015 | 4.93 | 9.95 | 1.5 |
| 2014 | 1 | 1.91 | 0.72 |
| 2013 | 1 | 1.34 | 0.82 |
| 2012 | 1.43 | 1.9 | 1.04 |
| 2011 | 2.67 | 3.56 | 1.42 |
| 2010 | 3.24 | 4.77 | 2.26 |
| 2009 | 2.9 | 4.49 | 1.3 |
| 2008 | 2.74 | 5.4 | 0.81 |
| 2007 | 2.55 | 5.19 | 1.14 |
| 2006 | 0.78 | 1.09 | 0.64 |
| 2005 | 1 | 1.45 | 0.75 |
| 2004 | 1.61 | 2.16 | 1.27 |
| 2003 | 1.78 | 2.3 | 1.59 |