| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 36.04 | 39.82 | 32.49 |
| 2024 | 31.64 | 51.4 | 22.28 |
| 2023 | 39.91 | 47.7 | 34.46 |
| 2022 | 42.1 | 55.2 | 33.23 |
| 2021 | 31.67 | 53.38 | 23.73 |
| 2020 | 37.1 | 44.28 | 29.13 |
| 2019 | 39.12 | 51.86 | 29.05 |
| 2018 | 38.83 | 55.48 | 26.69 |
| 2017 | 72.96 | 103.37 | 44.6 |
| 2016 | 87.97 | 112.3 | 67.94 |
| 2015 | 102.43 | 173 | 60.31 |
| 2014 | 70.36 | 103.25 | 52.71 |
| 2013 | 0 | -2.8 | |
| 2012 | 17.13 | 69.8 | 2.72 |
| 2011 | 5.09 | 6.42 | 2.73 |
| 2010 | 5.18 | 7.12 | 3.58 |
| 2009 | 2.87 | 4.32 | 1.2 |
| 2008 | 1.97 | 3.36 | 0.91 |
| 2007 | 2.95 | 4.71 | 1.59 |
| 2006 | 1.83 | 2.58 | 1.32 |
| 2005 | 1.48 | 2.01 | 1.07 |
| 2004 | 2.39 | 3.16 | 1.98 |
| 2003 | 2.33 | 2.81 | 1.75 |
| 2002 | 2.93 | 3.51 | 1.95 |
| 2001 | 3.76 | 4.47 | 2.69 |
| 2000 | 3.74 | 4.61 | 3.02 |
| 1999 | 3.55 | 4.6 | 3.03 |
| 1998 | 10 | 11.75 | 8.57 |
| 1997 | 10.35 | 16.26 | 6.06 |