| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2021 | 171.1 | 270.95 | 100.47 |
| 2020 | 131.23 | 194.49 | 64.27 |
| 2019 | 70.47 | 88.02 | 47.53 |
| 2018 | 61.22 | 80.5 | 46.29 |
| 2017 | 51.99 | 66.55 | 45.58 |
| 2016 | 56.44 | 104.17 | 43.03 |
| 2015 | 121.74 | 151.63 | 67.8 |
| 2014 | 68.01 | 82.49 | 49.24 |
| 2013 | 46.87 | 62.01 | 32.94 |
| 2012 | 44.66 | 55.07 | 34.07 |
| 2011 | 61.27 | 86.65 | 46.8 |
| 2010 | 72.84 | 93.43 | 51.56 |
| 2009 | 77.25 | 124.79 | 52.89 |
| 2008 | 101.53 | 176.76 | 53.22 |
| 2007 | 390.09 | 786.08 | 112.24 |
| 2006 | 194.64 | 264.9 | 120.32 |
| 2005 | 0 | -28.33 | |
| 2004 | 526.44 | 694.26 | 405.64 |
| 2003 | 566.62 | 708.06 | 364.51 |
| 2002 | 0 | -7.85 | |
| 2001 | 0 | -40.94 | |
| 2000 | 128.77 | 177.17 | 75.41 |
| 1999 | 0 | -31.04 | |
| 1998 | 2237.86 | 3030.97 | 1695.58 |
| 1997 | 85.84 | 121.84 | 61.46 |