| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 1.29 | 1.36 | 1.23 |
| 2024 | 1.34 | 1.51 | 1.15 |
| 2023 | 1.63 | 1.76 | 1.48 |
| 2022 | 1.72 | 2.06 | 1.43 |
| 2021 | 1.81 | 2.28 | 1.6 |
| 2020 | 1.86 | 2.25 | 1.67 |
| 2019 | 2.64 | 3.52 | 2.16 |
| 2018 | 3.79 | 5.77 | 2.79 |
| 2017 | 6.75 | 8.54 | 5.23 |
| 2016 | 88.51 | 596.85 | 5.45 |
| 2015 | 135.83 | 188.7 | 94.75 |
| 2014 | 76.54 | 108.65 | 57.32 |
| 2013 | 65.81 | 86.19 | 43.32 |
| 2012 | 53.71 | 68.72 | 40.72 |
| 2011 | 67.91 | 84.86 | 49.35 |
| 2010 | 0 | ||
| 2009 | 0 | ||
| 2008 | 0 | -1.35 | |
| 2007 | 0 | -0.67 | |
| 2006 | 0 | -0.49 | |
| 2005 | 0 | -0.42 | |
| 2004 | 3.61 | 4.35 | 2.69 |
| 2003 | 4.04 | 5.15 | 2.57 |
| 2002 | 5.1 | 6.09 | 3.75 |
| 2001 | 6.56 | 7.8 | 4.71 |
| 2000 | 8.62 | 14.1 | 4.28 |
| 1999 | 4 | 5.38 | 2.9 |
| 1998 | 3.85 | 4.71 | 3.18 |
| 1997 | 3.04 | 4.01 | 1.75 |