| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 0 | -5.82 | |
| 2024 | 105.28 | 128.08 | 93.65 |
| 2023 | 0 | -0.55 | |
| 2022 | 23.02 | 28.12 | 18 |
| 2021 | 6.73 | 26.44 | 1.32 |
| 2020 | 1.4 | 1.87 | 1.05 |
| 2019 | 1.4 | 2.14 | 1.05 |
| 2018 | 1.54 | 2.21 | 1.07 |
| 2017 | 2.5 | 2.83 | 2.01 |
| 2016 | 2.26 | 2.79 | 1.85 |
| 2015 | 2.7 | 5.12 | 1.78 |
| 2014 | 1.7 | 2.16 | 1.28 |
| 2013 | 1.45 | 1.86 | 1.04 |
| 2012 | 1.03 | 1.18 | 0.87 |
| 2011 | 1.57 | 2.17 | 0.99 |
| 2010 | 1.82 | 2.39 | 1.31 |
| 2009 | 1.47 | 1.87 | 0.85 |
| 2008 | 1.45 | 2.85 | 0.72 |
| 2007 | 2.04 | 3.54 | 0.74 |
| 2006 | 0.73 | 0.89 | 0.56 |
| 2005 | 0.76 | 1.05 | 0.55 |
| 2004 | 1.36 | 1.76 | 1.02 |
| 2003 | 1.47 | 1.8 | 1.22 |
| 2002 | 2.49 | 3.86 | 1.97 |
| 2001 | 4.03 | 4.68 | 3.53 |
| 2000 | 3.7 | 4.12 | 3.25 |
| 1999 | 3.86 | 4.88 | 3 |
| 1998 | 7.01 | 10.1 | 4.26 |