| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 13.66 | 22.13 | 3.36 |
| 2024 | 5.67 | 32.58 | 0.52 |
| 2023 | 0.7 | 0.89 | 0.56 |
| 2022 | 0.71 | 0.96 | 0.58 |
| 2021 | 0.77 | 0.94 | 0.67 |
| 2020 | 1.02 | 1.45 | 0.67 |
| 2019 | 1.06 | 1.57 | 0.75 |
| 2018 | 1.85 | 2.25 | 1.29 |
| 2017 | 3.09 | 4.03 | 2.15 |
| 2016 | 2.75 | 4.09 | 1.57 |
| 2015 | 2.75 | 4.58 | 2.1 |
| 2014 | 1.46 | 2.53 | 1.04 |
| 2013 | 1.44 | 2.28 | 1.07 |
| 2012 | 1.97 | 2.58 | 1.44 |
| 2011 | 4.83 | 9.72 | 2.15 |
| 2010 | 8.09 | 10.46 | 5.91 |
| 2009 | 7.51 | 10.16 | 3.24 |
| 2008 | 4.77 | 10.02 | 2.43 |
| 2007 | 9.02 | 17.5 | 2.87 |
| 2006 | 1.63 | 2.92 | 0.92 |
| 2005 | 0.84 | 1.11 | 0.56 |
| 2004 | 1.05 | 1.94 | 0.67 |