| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 0 | ||
| 2023 | 0 | ||
| 2022 | 61.03 | 123.09 | 25.01 |
| 2021 | 35.45 | 77.62 | 9.42 |
| 2020 | 10.44 | 16.04 | 7.04 |
| 2019 | 9.43 | 15.91 | 7.18 |
| 2018 | 14.63 | 26.95 | 7.25 |
| 2017 | 31.82 | 57.31 | 21.12 |
| 2016 | 30.11 | 70.75 | 16.82 |
| 2015 | 19.35 | 36.41 | 11.2 |
| 2014 | 10.58 | 15.3 | 8.31 |
| 2013 | 12.29 | 15.65 | 10.49 |
| 2012 | 13.69 | 16.83 | 9.81 |
| 2011 | 11.81 | 14.98 | 9.22 |
| 2010 | 13.22 | 18.48 | 10.78 |
| 2009 | 8.05 | 13.11 | 3.34 |
| 2008 | 6.38 | 14.78 | 2.18 |
| 2007 | 8.37 | 13.19 | 2.12 |
| 2006 | 1.98 | 2.54 | 1.25 |
| 2005 | 1.39 | 1.83 | 1.14 |
| 2004 | 2.41 | 3.89 | 1.55 |
| 2003 | 4 | 5.46 | 2.48 |
| 2002 | 5.15 | 5.75 | 4.23 |
| 2001 | 5.45 | 6.03 | 4.17 |