| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2020 | 31.54 | 33.94 | 27.12 |
| 2019 | 32.76 | 45.48 | 27.22 |
| 2018 | 38.77 | 55.71 | 26.18 |
| 2017 | 51.74 | 66.69 | 41.05 |
| 2016 | 59.86 | 98.04 | 43.37 |
| 2015 | 130.8 | 314.26 | 62.19 |
| 2014 | 60.09 | 76.34 | 48.21 |
| 2013 | 0 | -2.93 | |
| 2012 | 152.17 | 737.38 | 90.79 |
| 2011 | 140.07 | 172.44 | 95.13 |
| 2010 | 109.67 | 173.48 | 80.98 |
| 2009 | 75.68 | 103.11 | 42.87 |
| 2008 | 69.29 | 116.63 | 32.58 |
| 2007 | 96.52 | 169.23 | 40.03 |
| 2006 | 88.92 | 139.24 | 34.82 |
| 2005 | 219.54 | 838.14 | 31.3 |
| 2004 | 31.97 | 47.38 | 14.53 |
| 2003 | 21.86 | 26.4 | 18.49 |
| 2002 | 25.48 | 28.14 | 21.28 |
| 2001 | 34.25 | 43.56 | 23.75 |
| 2000 | 39.61 | 45.03 | 29.32 |