| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 2.06 | 2.4 | 1.76 |
| 2024 | 2.22 | 3.49 | 1.68 |
| 2023 | 2.14 | 2.87 | 1.79 |
| 2022 | 2.53 | 3.38 | 1.98 |
| 2021 | 2.66 | 3.53 | 2.16 |
| 2020 | 4.62 | 6.63 | 2.91 |
| 2019 | 4.72 | 6.77 | 3.77 |
| 2018 | 4.38 | 6.99 | 2.41 |
| 2017 | 9.12 | 14.27 | 5.79 |
| 2016 | 14.42 | 28.93 | 11.71 |
| 2015 | 8.99 | 35.63 | 4.39 |
| 2014 | 4.28 | 6.17 | 3.37 |
| 2013 | 3.92 | 4.62 | 3.16 |
| 2012 | 3.62 | 4.34 | 2.89 |
| 2011 | 4.76 | 5.87 | 3.14 |
| 2010 | 5.33 | 7.34 | 3.92 |
| 2009 | 3.64 | 5.56 | 2.05 |
| 2008 | 4.6 | 11 | 1.47 |
| 2007 | 10.26 | 16.01 | 3.73 |
| 2006 | 0 | -3.83 | |
| 2005 | 0 | -2.22 | |
| 2004 | 0 | -0.98 | |
| 2003 | 117.68 | 151.86 | 54.18 |
| 2002 | 3.36 | 4.48 | 1.88 |
| 2001 | 3.11 | 3.97 | 2.15 |
| 2000 | 3.24 | 4.38 | 2.43 |
| 1999 | 2.65 | 3.38 | 2.08 |
| 1998 | 2.99 | 3.79 | 2.13 |