| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 0 | -5.83 | |
| 2024 | 22.46 | 37.47 | 13.57 |
| 2023 | 23.14 | 37.34 | 19.49 |
| 2022 | 28.9 | 35.12 | 22.53 |
| 2021 | 159.16 | 268.14 | 110.02 |
| 2020 | 187.28 | 342.94 | 86.69 |
| 2019 | 105.2 | 252.29 | 47.79 |
| 2018 | 65.31 | 89.2 | 42.07 |
| 2017 | 73.28 | 97.25 | 49.59 |
| 2016 | 89.2 | 128.17 | 70.76 |
| 2015 | 75.66 | 122.44 | 45.22 |
| 2014 | 59.31 | 80.16 | 49.09 |
| 2013 | 65.53 | 91.02 | 43.64 |
| 2012 | 41.69 | 50.7 | 33.29 |
| 2011 | 84.03 | 164.22 | 36.1 |
| 2010 | 99.17 | 131.35 | 75.89 |
| 2009 | 55.57 | 92.32 | 24.62 |
| 2008 | 46.49 | 79.45 | 19.61 |
| 2007 | 73.85 | 125.85 | 35.9 |
| 2006 | 2.08 | 2.38 | 1.44 |
| 2005 | 32.54 | 62.81 | 18.92 |
| 2004 | 55.64 | 73.58 | 36.33 |
| 2003 | 83.36 | 119.11 | 48.77 |
| 2002 | 257 | 461.82 | 65.41 |
| 2001 | 56.69 | 67.69 | 41.53 |
| 2000 | 118.18 | 454.6 | 26.73 |
| 1999 | 6.45 | 9.31 | 4.41 |
| 1998 | 2.29 | 3.74 | 1.61 |