| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 2.11 | 2.47 | 1.52 |
| 2024 | 1.72 | 3.18 | 0.92 |
| 2023 | 3.27 | 4.07 | 2.76 |
| 2022 | 3.77 | 5.64 | 1.97 |
| 2021 | 2.02 | 3.31 | 1.28 |
| 2020 | 1.3 | 2.17 | 1.07 |
| 2019 | 1.5 | 2.07 | 1.27 |
| 2018 | 2.3 | 3.72 | 1.39 |
| 2017 | 4.55 | 7.02 | 2.88 |
| 2016 | 5.58 | 8.28 | 3.99 |
| 2015 | 22.16 | 108.84 | 7.13 |
| 2014 | 23.28 | 44.04 | 12.45 |
| 2013 | 2.42 | 3.98 | 1.76 |
| 2012 | 5.48 | 17.55 | 2.62 |
| 2011 | 12.7 | 16.36 | 8.28 |
| 2010 | 0 | -6.38 | |
| 2009 | 0 | -4.8 | |
| 2008 | 0 | -3.68 | |
| 2007 | 8.57 | 15.34 | 4.08 |
| 2006 | 3.22 | 5.02 | 1.36 |
| 2005 | 2.02 | 2.52 | 1.41 |
| 2004 | 3.25 | 4.69 | 1.73 |
| 2003 | 3.72 | 4.8 | 2.84 |
| 2002 | 5.17 | 5.41 | 5.01 |