| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 49.51 | 53.42 | 46.75 |
| 2024 | 54.57 | 65.9 | 41.55 |
| 2023 | 44.75 | 54.2 | 39.93 |
| 2022 | 42.62 | 51.56 | 36.18 |
| 2021 | 48.52 | 62.15 | 39.33 |
| 2020 | 50.63 | 56.81 | 43.92 |
| 2019 | 48.26 | 53.02 | 43.01 |
| 2018 | 46.84 | 54.55 | 41.2 |
| 2017 | 44.81 | 54.7 | 37.18 |
| 2016 | 35.62 | 41.33 | 29.87 |
| 2015 | 45.9 | 64.25 | 36.28 |
| 2014 | 25.24 | 42.37 | 17.9 |
| 2013 | 18.15 | 20.87 | 15.16 |
| 2012 | 11.69 | 15.41 | 8.4 |
| 2011 | 11.75 | 16.09 | 8.5 |
| 2010 | 15.25 | 19.51 | 11.28 |
| 2009 | 19.33 | 27.93 | 12.54 |
| 2008 | 32.48 | 60.04 | 11.34 |
| 2007 | 16.52 | 47.81 | 5.3 |
| 2006 | 5.86 | 9.25 | 3.65 |
| 2005 | 2.42 | 4.4 | 1.09 |
| 2004 | 2.19 | 4.16 | 1.3 |