| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 14.11 | 19.93 | 10.7 |
| 2023 | 23.09 | 33.76 | 13.86 |
| 2022 | 32.16 | 42.9 | 21.47 |
| 2021 | 65.07 | 124.02 | 36.67 |
| 2020 | 29.84 | 52.5 | 14.67 |
| 2019 | 16.52 | 21.54 | 12.09 |
| 2018 | 10.99 | 14.53 | 8.05 |
| 2017 | 8.67 | 11.14 | 6.53 |
| 2016 | 6.11 | 7.98 | 4.15 |
| 2015 | 6.92 | 11.78 | 4.74 |
| 2014 | 4.84 | 5.96 | 4.31 |
| 2013 | 5.37 | 6.39 | 4.77 |
| 2012 | 7.43 | 13.16 | 4.07 |
| 2011 | 21.61 | 28.72 | 9.59 |
| 2010 | 16.17 | 31.35 | 9.06 |
| 2009 | 9.13 | 11.43 | 6.23 |
| 2008 | 8.31 | 14.64 | 4.23 |
| 2007 | 15.24 | 23.02 | 8.94 |
| 2006 | 8.13 | 10.85 | 3.97 |
| 2005 | 3.73 | 4.72 | 2.49 |
| 2004 | 7.99 | 15.76 | 3.64 |
| 2003 | 6.55 | 7.95 | 4.68 |
| 2002 | 6.98 | 8.74 | 4.61 |
| 2001 | 5.5 | 6.25 | 4.3 |
| 2000 | 5.73 | 7.77 | 4.96 |
| 1999 | 6.52 | 10 | 4.07 |
| 1998 | 3.79 | 4.68 | 2.95 |