| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 2.39 | 2.63 | 2.11 |
| 2024 | 2.48 | 3.57 | 1.93 |
| 2023 | 2.67 | 2.97 | 2.33 |
| 2022 | 2.96 | 4 | 2.45 |
| 2021 | 3.34 | 4.61 | 2.93 |
| 2020 | 4.08 | 5.08 | 3.34 |
| 2019 | 4.67 | 7.15 | 2.92 |
| 2018 | 4.59 | 6.07 | 2.98 |
| 2017 | 8.99 | 13.52 | 5.48 |
| 2016 | 12.45 | 16.24 | 10.87 |
| 2015 | 13.6 | 17.27 | 10.55 |
| 2014 | 55.75 | 78.98 | 48.44 |
| 2013 | 42.02 | 53.19 | 30.91 |
| 2012 | 25.43 | 47.07 | 10.01 |
| 2011 | 16.71 | 23.83 | 9.73 |
| 2010 | 0 | -11.18 | |
| 2009 | 104.63 | 254.33 | 5.09 |
| 2008 | 6.1 | 10 | 2.93 |
| 2007 | 7.01 | 10.95 | 2.13 |
| 2006 | 1.99 | 2.95 | 1.37 |
| 2005 | 1.73 | 2.81 | 1.07 |
| 2004 | 6.67 | 9.29 | 2.6 |
| 2003 | 8.31 | 9.13 | 8.03 |
| 2002 | 8.31 | 9.26 | 6.91 |
| 2001 | 8.13 | 13.66 | 5.04 |
| 2000 | 3.54 | 5.52 | 2.5 |