| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 17.11 | 20.96 | 14.5 |
| 2024 | 15.68 | 22.12 | 10.53 |
| 2023 | 22.86 | 26.97 | 19.24 |
| 2022 | 23.78 | 35.67 | 17.32 |
| 2021 | 37.74 | 88.6 | 24.42 |
| 2020 | 83.93 | 100.46 | 67.73 |
| 2019 | 0 | -3.55 | |
| 2018 | 0 | -4.8 | |
| 2017 | 125.33 | 215.51 | 59.35 |
| 2016 | 54.07 | 217.73 | 15.45 |
| 2015 | 17.39 | 22.17 | 13.42 |
| 2014 | 11.43 | 18.11 | 7.29 |
| 2013 | 8.95 | 11.58 | 6.87 |
| 2012 | 11.54 | 14.11 | 8.5 |
| 2011 | 16.06 | 23.05 | 9.93 |
| 2010 | 7.7 | 13.13 | 4.93 |
| 2009 | 4.03 | 6.05 | 2.08 |
| 2008 | 2.95 | 5.3 | 1.42 |
| 2007 | 4.1 | 6.06 | 2.45 |
| 2006 | 2.02 | 2.75 | 1.61 |
| 2005 | 1.51 | 2.27 | 1.11 |
| 2004 | 1.83 | 2.35 | 1.37 |
| 2003 | 2.29 | 2.97 | 1.61 |
| 2002 | 3.56 | 3.89 | 2.98 |
| 2001 | 4.76 | 5.83 | 3.62 |