| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 388.64 | 420.68 | 348.79 |
| 2024 | 7.12 | 13.67 | 2.65 |
| 2023 | 5.4 | 6.94 | 3.76 |
| 2022 | 7.88 | 10.35 | 4.94 |
| 2021 | 5.75 | 9.82 | 3.93 |
| 2020 | 4.47 | 8.44 | 2.62 |
| 2019 | 3.42 | 5.29 | 2.82 |
| 2018 | 8.71 | 14.03 | 2.54 |
| 2017 | 12.68 | 14.57 | 9.05 |
| 2016 | 10.08 | 15.93 | 8.52 |
| 2015 | 7.64 | 20.97 | 2.5 |
| 2014 | 2.02 | 2.86 | 1.54 |
| 2013 | 1.81 | 2.21 | 1.59 |
| 2012 | 1.84 | 2.22 | 1.52 |
| 2011 | 4.1 | 6.45 | 2.12 |
| 2010 | 3.43 | 4.53 | 2.49 |
| 2009 | 2.62 | 3.69 | 1.57 |
| 2008 | 2.33 | 4.07 | 1.22 |
| 2007 | 2.78 | 4.75 | 1.2 |
| 2006 | 1.13 | 1.53 | 0.65 |
| 2005 | 1.04 | 1.44 | 0.76 |
| 2004 | 1.85 | 2.63 | 1.41 |
| 2003 | 2.34 | 3.34 | 1.5 |
| 2002 | 5.38 | 10.38 | 3.59 |
| 2001 | 12.5 | 16.66 | 7.7 |
| 2000 | 5.77 | 8.09 | 4.17 |
| 1999 | 4.22 | 5.41 | 2.99 |