| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 6.6 | 8.35 | 4.59 |
| 2024 | 4.79 | 7.53 | 3.27 |
| 2023 | 5 | 9.75 | 3.23 |
| 2022 | 3.38 | 4.12 | 2.66 |
| 2021 | 10 | 17.47 | 3.64 |
| 2020 | 11.32 | 15.58 | 9.99 |
| 2019 | 0 | -3.93 | |
| 2018 | 346.83 | 661.95 | 75.9 |
| 2017 | 80.23 | 146.19 | 38.65 |
| 2016 | 69.19 | 133.2 | 44.03 |
| 2015 | 38.84 | 112.19 | 10.14 |
| 2014 | 5.82 | 10.77 | 3.22 |
| 2013 | 3.58 | 4.13 | 2.96 |
| 2012 | 3.58 | 4.67 | 2.75 |
| 2011 | 4.19 | 5.46 | 3.26 |
| 2010 | 3.77 | 4.64 | 2.75 |
| 2009 | 2.62 | 4.66 | 1.49 |
| 2008 | 2.83 | 5.29 | 1.19 |
| 2007 | 3.52 | 6.11 | 1.57 |
| 2006 | 1.34 | 1.82 | 0.89 |
| 2005 | 1.02 | 1.4 | 0.77 |
| 2004 | 1.8 | 2.62 | 1.08 |
| 2003 | 2.58 | 3.13 | 1.97 |
| 2002 | 4.09 | 5.62 | 3.08 |
| 2001 | 5.49 | 6.94 | 4.08 |
| 2000 | 4.17 | 5.26 | 3.17 |
| 1999 | 3.69 | 4.69 | 2.81 |