| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 2.27 | 2.6 | 1.87 |
| 2024 | 2.82 | 3.87 | 1.91 |
| 2023 | 1.69 | 3.22 | 0.82 |
| 2022 | 0.81 | 0.99 | 0.67 |
| 2021 | 1.34 | 2.11 | 0.76 |
| 2020 | 1.84 | 3.02 | 0.82 |
| 2019 | 0.82 | 1.17 | 0.6 |
| 2018 | 0.91 | 1.27 | 0.58 |
| 2017 | 2.23 | 4.7 | 1.11 |
| 2016 | 128.71 | 230.99 | 4.48 |
| 2015 | 156.06 | 325.8 | 91.52 |
| 2014 | 184.15 | 250 | 117.49 |
| 2013 | 56.17 | 255.74 | 13.28 |
| 2012 | 54.95 | 127.37 | 11.41 |
| 2011 | 48.73 | 122.42 | 13.14 |
| 2010 | 127.24 | 225.81 | 77.95 |
| 2009 | 175.28 | 289.17 | 101.62 |
| 2008 | 135.89 | 237.64 | 72.91 |
| 2007 | 142.63 | 299.64 | 57.45 |
| 2006 | 46.55 | 66.28 | 28.65 |
| 2005 | 22.77 | 29.29 | 15.01 |
| 2004 | 49.74 | 95.47 | 22.78 |