| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 20.48 | 21.86 | 19.09 |
| 2024 | 18.01 | 23.88 | 16.02 |
| 2023 | 34.27 | 59.5 | 18.04 |
| 2022 | 37.38 | 54.89 | 13.97 |
| 2021 | 30.59 | 55.1 | 16.86 |
| 2020 | 166.48 | 454.95 | 45.43 |
| 2019 | 58.04 | 66.46 | 49.06 |
| 2018 | 44.04 | 60.24 | 36.48 |
| 2017 | 0 | -29.6 | |
| 2016 | 373.15 | 384.86 | 360.58 |
| 2015 | 1618.33 | 1794.01 | 1494.55 |
| 2014 | 463.3 | 1897.62 | 52.67 |
| 2013 | 0 | -22.33 | |
| 2012 | 30.73 | 34.69 | 20.99 |
| 2011 | 42.2 | 68.34 | 25.76 |
| 2010 | 39.6 | 69.78 | 25.42 |
| 2009 | 18.8 | 31.75 | 11.51 |
| 2008 | 50.67 | 149.81 | 8.91 |
| 2007 | 136.7 | 269.99 | 43.54 |
| 2006 | 34.76 | 47.35 | 23.43 |
| 2005 | 7.75 | 25.17 | 3.01 |
| 2004 | 48.46 | 175.51 | 3.77 |
| 2003 | 1083.64 | 3457.73 | 4.99 |
| 2002 | 7.87 | 10.84 | 6.01 |
| 2001 | 11.83 | 19.38 | 4.5 |
| 2000 | 3.63 | 5.01 | 2.55 |
| 1999 | 0 | -0.18 | |
| 1998 | 3.45 | 5.7 | 2.31 |
| 1997 | 4.63 | 7.4 | 2.31 |