| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 10.33 | 12.04 | 8.2 |
| 2024 | 5.12 | 14.56 | 2.39 |
| 2023 | 3.75 | 5.13 | 3.17 |
| 2022 | 3.16 | 4.49 | 2.62 |
| 2021 | 1.87 | 3.54 | 1.06 |
| 2020 | 0.86 | 1.52 | 0.4 |
| 2019 | 0.63 | 1.31 | 0.34 |
| 2018 | 2.18 | 4.18 | 0.77 |
| 2017 | 4.1 | 5.47 | 3.06 |
| 2016 | 4.73 | 6.74 | 3.91 |
| 2015 | 3.56 | 5.19 | 2.21 |
| 2014 | 1.85 | 2.86 | 1.51 |
| 2013 | 1.94 | 2.51 | 1.57 |
| 2012 | 2.55 | 3.64 | 2.07 |
| 2011 | 3.08 | 4.14 | 2.32 |
| 2010 | 0 | ||
| 2009 | 3.48 | 9.37 | 1.83 |
| 2008 | 4.03 | 6.36 | 1.28 |
| 2007 | 4.41 | 7.84 | 1.59 |
| 2006 | 1.45 | 1.97 | 1.13 |
| 2005 | 1.18 | 1.54 | 0.89 |
| 2004 | 1.91 | 2.92 | 1.36 |
| 2003 | 2.87 | 3.67 | 1.96 |
| 2002 | 3.56 | 4.06 | 2.86 |
| 2001 | 5.14 | 6.95 | 3.38 |