| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 3.94 | 6.78 | 2.38 |
| 2024 | 2.24 | 4.43 | 0.99 |
| 2023 | 1.67 | 2.45 | 1.27 |
| 2022 | 1.72 | 3.07 | 1.13 |
| 2021 | 2.03 | 3.03 | 1.61 |
| 2020 | 2.01 | 2.84 | 1.26 |
| 2019 | 1.35 | 1.81 | 0.96 |
| 2018 | 1.56 | 2.32 | 0.89 |
| 2017 | 1.92 | 2.45 | 1.55 |
| 2016 | 2.81 | 4.04 | 2.17 |
| 2015 | 3.87 | 6.46 | 1.97 |
| 2014 | 3.82 | 5.04 | 3.02 |
| 2013 | 3.2 | 4.29 | 2.36 |
| 2012 | 3.55 | 5.15 | 2.29 |
| 2011 | 4.16 | 6.21 | 2.58 |
| 2010 | 7.09 | 11.58 | 3.96 |
| 2009 | 7.02 | 9.95 | 3.3 |
| 2008 | 9.45 | 18.28 | 2.2 |
| 2007 | 9.19 | 13.59 | 1.59 |
| 2006 | 1.97 | 2.6 | 1.36 |
| 2005 | 1.83 | 2.24 | 1.58 |
| 2004 | 2.55 | 3.69 | 1.67 |
| 2003 | 3.23 | 3.95 | 2.29 |
| 2002 | 4.6 | 5.14 | 3.85 |
| 2001 | 5.91 | 7.3 | 3.64 |
| 2000 | 7.77 | 10.01 | 4.83 |