| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2019 | 489.57 | 828.4 | 312.67 |
| 2018 | 240.06 | 362.54 | 165.21 |
| 2017 | 2,314.22 | 5011.97 | 246.57 |
| 2016 | 2,715.89 | 7631.18 | 128.33 |
| 2015 | 325.48 | 525.17 | 191.66 |
| 2014 | 0.00 | -15.69 | |
| 2013 | 938.20 | 1045.63 | 851.83 |
| 2012 | 331.93 | 903.13 | 166.16 |
| 2011 | 229.33 | 374.99 | 97.93 |
| 2010 | 70.78 | 106.74 | 45.36 |
| 2009 | 70.53 | 90.85 | 42.08 |
| 2008 | 74.39 | 208.64 | 24.62 |
| 2007 | 243.10 | 485.13 | 142.33 |
| 2006 | 157.31 | 188.83 | 90.67 |
| 2005 | 4,294.74 | 16028.9 | 141.51 |
| 2004 | 3,222.82 | 17969.6 | 98.61 |
| 2003 | 84.82 | 112.05 | 64.37 |
| 2002 | 80.38 | 94.03 | 62.39 |
| 2001 | 140.46 | 162.22 | 112.33 |
| 2000 | 79.85 | 122.85 | 35.78 |
| 1999 | 30.07 | 42.63 | 19.04 |
| 1998 | 26.85 | 34.6 | 21.94 |