| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2026 | 3.76 | 4.01 | 3.23 |
| 2025 | 3.47 | 4.36 | 2.85 |
| 2024 | 2.88 | 3.89 | 2.01 |
| 2023 | 3.03 | 4.16 | 2.7 |
| 2022 | 3.16 | 4.49 | 2.44 |
| 2021 | 2.58 | 4.99 | 1.93 |
| 2020 | 2.53 | 2.87 | 2.25 |
| 2019 | 2.89 | 3.36 | 2.54 |
| 2018 | 3.85 | 6.38 | 2.44 |
| 2017 | 7.57 | 10.34 | 5.32 |
| 2016 | 9.14 | 10.66 | 7.3 |
| 2015 | 10.28 | 11.56 | 9.23 |
| 2014 | 259.85 | 290.54 | 215.92 |
| 2013 | 0 | -24.65 | |
| 2012 | 35.64 | 157.59 | 12.25 |
| 2011 | 19.48 | 23.99 | 13.13 |
| 2010 | 16.57 | 24.68 | 11.5 |
| 2009 | 10.68 | 13.49 | 5.48 |
| 2008 | 6.02 | 8.33 | 3.25 |
| 2007 | 2.97 | 5.41 | 1.54 |
| 2006 | 1.55 | 1.87 | 1.33 |
| 2005 | 1.76 | 2.27 | 1.4 |