| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 7.09 | 7.93 | 6.27 |
| 2024 | 7.21 | 10.96 | 4.94 |
| 2023 | 10.48 | 14.52 | 8.58 |
| 2022 | 10.78 | 14.19 | 7.43 |
| 2021 | 11.17 | 21.31 | 6.17 |
| 2020 | 5.52 | 7.31 | 4.09 |
| 2019 | 5.84 | 8.44 | 3.86 |
| 2018 | 4.99 | 6.25 | 3.88 |
| 2017 | 6.3 | 8.51 | 4.92 |
| 2016 | 6.3 | 7.92 | 5.32 |
| 2015 | 10.46 | 15.72 | 5.36 |
| 2014 | 8.53 | 12.07 | 6.52 |
| 2013 | 9.79 | 12.56 | 6.3 |
| 2012 | 0 | ||
| 2011 | 72.9 | 555 | 34.6 |
| 2010 | 20.56 | 48.12 | 7.4 |
| 2009 | 6.32 | 10.69 | 1.85 |
| 2008 | 4.31 | 11.01 | 1.32 |
| 2007 | 6.11 | 13.72 | 2.01 |
| 2006 | 1.71 | 2.61 | 0.98 |
| 2005 | 1.03 | 1.4 | 0.72 |
| 2004 | 2 | 3 | 1.29 |
| 2003 | 2.24 | 2.86 | 1.89 |
| 2002 | 3.1 | 3.8 | 2.64 |
| 2001 | 3.88 | 4.75 | 2.87 |
| 2000 | 3.41 | 3.99 | 2.66 |
| 1999 | 2.87 | 4.35 | 2.04 |