| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 15.16 | 17.84 | 11.31 |
| 2024 | 17.85 | 24.99 | 10.19 |
| 2023 | 17.28 | 22.12 | 14.11 |
| 2022 | 12.67 | 17.96 | 6.87 |
| 2021 | 7.7 | 10.37 | 5.71 |
| 2020 | 5.03 | 6.7 | 1.87 |
| 2019 | 3.06 | 4.09 | 1.57 |
| 2018 | 2.81 | 3.52 | 2.33 |
| 2017 | 4.51 | 6.93 | 2.96 |
| 2016 | 548.47 | 2464.28 | 4.42 |
| 2015 | 553.74 | 1367.37 | 226.5 |
| 2014 | 201.47 | 253.84 | 138.98 |
| 2013 | 240.37 | 361.85 | 154.71 |
| 2012 | 0 | -12.78 | |
| 2011 | 0 | -14.38 | |
| 2010 | 0 | -23.42 | |
| 2009 | 0 | -9.5 | |
| 2008 | 0 | -5.6 | |
| 2007 | 0 | -11.84 | |
| 2006 | 0 | -7.24 | |
| 2005 | 0 | -4.56 | |
| 2004 | 259.78 | 298.56 | 222.83 |
| 2003 | 76.93 | 276.67 | 36.64 |
| 2002 | 41.76 | 55.23 | 21.76 |
| 2001 | 31.27 | 38.79 | 23.71 |
| 2000 | 373.06 | 466.86 | 245.19 |
| 1999 | 97.63 | 127.66 | 77.87 |
| 1998 | 9.37 | 12.33 | 6.66 |
| 1997 | 4.93 | 6.21 | 3.56 |