| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 28.84 | 33.31 | 26.37 |
| 2024 | 41.57 | 54.25 | 23.69 |
| 2023 | 54.42 | 114.67 | 3.15 |
| 2022 | 30.37 | 64.15 | 21.24 |
| 2021 | 0 | -2.99 | |
| 2020 | 56.77 | 65.93 | 51.01 |
| 2019 | 100.19 | 194.33 | 48.35 |
| 2018 | 534.97 | 866.44 | 175.86 |
| 2017 | 176.65 | 930.13 | 14.23 |
| 2016 | 16.52 | 21.59 | 14.59 |
| 2015 | 20.37 | 30.83 | 12.3 |
| 2014 | 13.66 | 21.32 | 9.78 |
| 2013 | 433.62 | 444.21 | 385.22 |
| 2012 | 104.22 | 405.11 | 12.82 |
| 2011 | 30.58 | 52.36 | 12.77 |
| 2010 | 0 | -8.83 | |
| 2009 | 0 | -7.63 | |
| 2008 | 60.73 | 98.41 | 31.6 |
| 2007 | 1313.22 | 4610.42 | 73.37 |
| 2006 | 307.08 | 406.61 | 57.68 |
| 2005 | 0 | -0.19 | |
| 2004 | 0 | -0.1 | |
| 2003 | 0 | -0.11 | |
| 2002 | 54.58 | 65.98 | 43.83 |
| 2001 | 9.58 | 18.61 | 2.79 |
| 2000 | 1.54 | 2.87 | 0.82 |
| 1999 | 8.04 | 11.24 | 4.88 |
| 1998 | 0.74 | 1.02 | 0.46 |
| 1997 | 3.67 | 9.2 | 0.31 |