| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 1.34 | 1.94 | 1.19 |
| 2023 | 1.53 | 1.78 | 1.19 |
| 2022 | 1.77 | 2.29 | 1.47 |
| 2021 | 1.83 | 3.24 | 0.97 |
| 2020 | 1.01 | 1.16 | 0.89 |
| 2019 | 1.36 | 1.82 | 1.03 |
| 2018 | 1.69 | 2.39 | 1.29 |
| 2017 | 2.29 | 2.93 | 1.95 |
| 2016 | 2.01 | 2.38 | 1.77 |
| 2015 | 5.21 | 12.28 | 2.33 |
| 2014 | 2.04 | 3.86 | 1.47 |
| 2013 | 2.13 | 3.35 | 1.58 |
| 2012 | 2.72 | 3.46 | 2.03 |
| 2011 | 3.09 | 4.71 | 1.8 |
| 2010 | 1.9 | 2.72 | 1.51 |
| 2009 | 1.83 | 2.68 | 1.16 |
| 2008 | 2.17 | 4.27 | 0.91 |
| 2007 | 3.33 | 7.83 | 1.47 |
| 2006 | 1.11 | 1.45 | 0.86 |
| 2005 | 1.02 | 1.2 | 0.44 |
| 2004 | 1.45 | 2.07 | 1.09 |
| 2003 | 1.64 | 1.9 | 1.41 |
| 2002 | 1.81 | 2.11 | 1.53 |