| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 2.18 | 2.62 | 1.68 |
| 2024 | 2.04 | 2.56 | 1.46 |
| 2023 | 2.2 | 2.73 | 1.77 |
| 2022 | 2.05 | 2.88 | 1.46 |
| 2021 | 2.07 | 3.03 | 1.5 |
| 2020 | 1.84 | 2.25 | 1.54 |
| 2019 | 2.2 | 3.31 | 1.62 |
| 2018 | 2.14 | 3.11 | 1.69 |
| 2017 | 3.26 | 5.06 | 2.5 |
| 2016 | 3 | 4.63 | 2.01 |
| 2015 | 4.54 | 7.16 | 2.37 |
| 2014 | 3.14 | 5.35 | 2.01 |
| 2013 | 2.68 | 3.73 | 2.18 |
| 2012 | 323.06 | 1305.74 | 2.54 |
| 2011 | 50.86 | 68.7 | 38.51 |
| 2010 | 44.5 | 73.86 | 21.97 |
| 2009 | 15.86 | 24.92 | 6.93 |
| 2008 | 12.94 | 27.61 | 4.85 |
| 2007 | 16.45 | 28.97 | 6.33 |
| 2006 | 3.45 | 6.33 | 1.17 |
| 2005 | 1.38 | 1.89 | 0.93 |
| 2004 | 2.59 | 3.49 | 1.72 |
| 2003 | 2.85 | 3.43 | 2.26 |
| 2002 | 3.41 | 3.97 | 2.97 |
| 2001 | 5.14 | 6.71 | 3.45 |
| 2000 | 5.06 | 5.6 | 4.59 |