| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 0 | ||
| 2024 | 0 | ||
| 2023 | 33.43 | 41.39 | 30.41 |
| 2022 | 52.66 | 68.18 | 37.59 |
| 2021 | 14.38 | 17 | 12.43 |
| 2020 | 12.59 | 50.42 | 0.53 |
| 2019 | 0.8 | 1.05 | 0.53 |
| 2018 | 1.1 | 1.72 | 0.51 |
| 2017 | 1.85 | 2.07 | 1.49 |
| 2016 | 5.47 | 14.92 | 1.85 |
| 2015 | 8.71 | 15.99 | 4.62 |
| 2014 | 5.37 | 7.56 | 4.22 |
| 2013 | 5.95 | 7.78 | 4.35 |
| 2012 | 7.64 | 10.09 | 5.45 |
| 2011 | 78.54 | 217.79 | 6.08 |
| 2010 | 0 | -7.11 | |
| 2009 | 0 | -4.08 | |
| 2008 | 0 | -2.82 | |
| 2007 | 24.15 | 38.9 | 13.39 |
| 2006 | 7.7 | 15.62 | 1.19 |
| 2005 | 1.63 | 2.29 | 1.19 |
| 2004 | 2.02 | 2.9 | 1.21 |
| 2003 | 2.61 | 3.03 | 1.94 |
| 2002 | 3.66 | 4.14 | 3 |
| 2001 | 5.19 | 6.23 | 3.53 |
| 2000 | 5.78 | 7.28 | 3.06 |
| 1999 | 3.64 | 5.69 | 2.93 |
| 1998 | 4.47 | 5.87 | 3.72 |
| 1997 | 7.06 | 11.11 | 4.89 |