| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2023 | 57.16 | 72.51 | 34.99 |
| 2022 | 51.96 | 88.64 | 40.03 |
| 2021 | 163.79 | 577.13 | 70.87 |
| 2020 | 19.87 | 22.91 | 15.29 |
| 2019 | 14.99 | 22.02 | 10.8 |
| 2018 | 17.28 | 23.76 | 12.48 |
| 2017 | 22.09 | 24.94 | 19.7 |
| 2016 | 20.67 | 24.15 | 17.54 |
| 2015 | 21.24 | 27.6 | 16.42 |
| 2014 | 18.7 | 22.6 | 15.98 |
| 2013 | 26.54 | 36.36 | 21.79 |
| 2012 | 29.45 | 37.06 | 24.65 |
| 2011 | 44.85 | 65.61 | 35.36 |
| 2010 | 52.91 | 63.36 | 42.97 |
| 2009 | 36.87 | 48.28 | 28.28 |
| 2008 | 55.8 | 105.49 | 26.19 |
| 2007 | 71.02 | 113.84 | 33.45 |
| 2006 | 34.37 | 48.68 | 17.19 |
| 2005 | 22.89 | 31.82 | 16.54 |
| 2004 | 27.61 | 33 | 23.04 |
| 2003 | 27.48 | 31.45 | 23.01 |
| 2002 | 28.09 | 30.76 | 24.35 |
| 2001 | 35.02 | 42.79 | 27.53 |
| 2000 | 47.69 | 68.16 | 36.25 |
| 1999 | 48.67 | 58.3 | 37.73 |
| 1998 | 58.52 | 71.67 | 47.97 |
| 1997 | 44.8 | 60.03 | 30.24 |