| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 0 | -22.6 | |
| 2024 | 15.94 | 22.38 | 9.39 |
| 2023 | 14.33 | 24.76 | 8.37 |
| 2022 | 8.89 | 11.65 | 5.02 |
| 2021 | 5.92 | 13.11 | 1.74 |
| 2020 | 2.33 | 4.26 | 1.22 |
| 2019 | 1.64 | 2.38 | 1.33 |
| 2018 | 1.84 | 2.45 | 1.38 |
| 2017 | 3.14 | 4.25 | 2.28 |
| 2016 | 4.78 | 6.06 | 4.13 |
| 2015 | 8.83 | 19.03 | 4.8 |
| 2014 | 642.92 | 696.29 | 586.95 |
| 2013 | 0 | -26.43 | |
| 2012 | 70.18 | 81.36 | 52.35 |
| 2011 | 69.78 | 98.32 | 48.84 |
| 2010 | 45.51 | 76.48 | 9.12 |
| 2009 | 8.53 | 14.33 | 3.21 |
| 2008 | 13.86 | 26.53 | 2.26 |
| 2007 | 18.87 | 26.54 | 5.88 |
| 2006 | 2.93 | 6.54 | 1.86 |
| 2005 | 1.97 | 3.49 | 1.27 |
| 2004 | 2.91 | 3.86 | 2.02 |
| 2003 | 3.32 | 4.2 | 2.57 |
| 2002 | 4.73 | 5.33 | 3.37 |
| 2001 | 6.53 | 8.27 | 4.39 |
| 2000 | 9.49 | 13.29 | 5.82 |