| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 2.02 | 2.31 | 1.89 |
| 2024 | 2.5 | 3.08 | 1.93 |
| 2023 | 2.42 | 3.08 | 1.87 |
| 2022 | 2.43 | 3.4 | 1.91 |
| 2021 | 12.76 | 39.07 | 3.1 |
| 2020 | 19.46 | 28.37 | 10.92 |
| 2019 | 11.73 | 13.84 | 10.24 |
| 2018 | 12.7 | 15.91 | 8.54 |
| 2017 | 14.56 | 16.21 | 12.58 |
| 2016 | 15.86 | 18.35 | 12.14 |
| 2015 | 12.54 | 17.62 | 10.87 |
| 2014 | 13.25 | 18.08 | 10.89 |
| 2013 | 17.02 | 24.83 | 11.55 |
| 2012 | 0 | ||
| 2011 | 0 | ||
| 2010 | 0 | ||
| 2009 | 0 | ||
| 2008 | 0 | ||
| 2007 | 0 | -4.33 | |
| 2006 | 135.02 | 317.13 | 0.78 |
| 2005 | 1.26 | 1.68 | 0.86 |
| 2004 | 1.71 | 2.5 | 1.18 |
| 2003 | 2.76 | 4 | 1.8 |
| 2002 | 4.62 | 6.12 | 3.99 |
| 2001 | 6.89 | 9.02 | 5.35 |
| 2000 | 7.15 | 9.51 | 4.8 |
| 1999 | 5.44 | 9.33 | 4.17 |
| 1998 | 5.43 | 7.64 | 3.35 |
| 1997 | 5.21 | 7.87 | 3.52 |