| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2023 | 19.1 | 20.23 | 17.71 |
| 2022 | 18.64 | 28.01 | 14.56 |
| 2021 | 48.15 | 74.03 | 25.88 |
| 2020 | 70.42 | 104.31 | 48.86 |
| 2019 | 48.08 | 64.53 | 28.18 |
| 2018 | 43.81 | 59.62 | 27.19 |
| 2017 | 43.02 | 54.27 | 36.61 |
| 2016 | 38.61 | 45.55 | 26.56 |
| 2015 | 45.43 | 68.29 | 28.02 |
| 2014 | 45.32 | 57.09 | 36.74 |
| 2013 | 43.39 | 61.37 | 33.42 |
| 2012 | 46.74 | 61.96 | 33.38 |
| 2011 | 73.83 | 95.41 | 52.9 |
| 2010 | 71.73 | 100.52 | 51.79 |
| 2009 | 105.01 | 344.67 | 46.18 |
| 2008 | 421.95 | 1425.44 | 48.13 |
| 2007 | 202.22 | 504.95 | 44.6 |
| 2006 | 0 | -6.1 | |
| 2005 | 57.46 | 105.93 | 31.17 |
| 2004 | 0 | -5.01 | |
| 2003 | 150.04 | 197.65 | 115.8 |
| 2002 | 262.26 | 353.96 | 205.51 |
| 2001 | 61.08 | 76.22 | 44.35 |
| 2000 | 197.28 | 254.12 | 134.68 |
| 1999 | 44.82 | 62.63 | 32.27 |
| 1998 | 76.3 | 116.51 | 37.58 |
| 1997 | 36.19 | 57.25 | 18.4 |