| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2019 | 0.00 | -9.92 | |
| 2018 | 86.42 | 106.19 | 65.62 |
| 2017 | 0.00 | -19.8 | |
| 2016 | 40.11 | 49 | 33.7 |
| 2015 | 156.21 | 317.76 | 39.17 |
| 2014 | 199.26 | 371.17 | 33.51 |
| 2013 | 37.58 | 74.71 | 23.07 |
| 2012 | 0.00 | -2.08 | |
| 2011 | 2,803.18 | 5667.68 | 81.46 |
| 2010 | 89.76 | 122.91 | 59.02 |
| 2009 | 75.46 | 88.23 | 66.95 |
| 2008 | 131.90 | 368.43 | 55.02 |
| 2007 | 187.19 | 623.24 | 21.11 |
| 2006 | 37.21 | 76.19 | 20.25 |
| 2005 | 70.61 | 168.68 | 14.55 |
| 2004 | 23.91 | 36.35 | 15.86 |
| 2003 | 34.36 | 87.6 | 25.23 |
| 2002 | 619.67 | 720.47 | 491.96 |
| 2001 | 42.58 | 53.54 | 29.43 |
| 2000 | 48.38 | 56.78 | 36.16 |