| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 0 | ||
| 2023 | 0 | ||
| 2022 | 0 | ||
| 2021 | 0 | -1.98 | |
| 2020 | 0 | -3.42 | |
| 2019 | 1136.11 | 2539 | 76.83 |
| 2018 | 68.54 | 114.79 | 40.99 |
| 2017 | 120.22 | 137.29 | 106.11 |
| 2016 | 103.32 | 204.83 | 40.61 |
| 2015 | 120.92 | 314.03 | 5.25 |
| 2014 | 3.84 | 7.51 | 2.32 |
| 2013 | 3.26 | 4.74 | 2.66 |
| 2012 | 2.96 | 3.87 | 2.48 |
| 2011 | 4.24 | 6.19 | 2.56 |
| 2010 | 3.77 | 4.65 | 3.04 |
| 2009 | 3.58 | 5.2 | 1.98 |
| 2008 | 3.45 | 7.12 | 1.52 |
| 2007 | 5.4 | 7.57 | 2.51 |
| 2006 | 2.21 | 3.01 | 1.65 |
| 2005 | 2.09 | 3.07 | 1.65 |
| 2004 | 2.35 | 2.9 | 1.26 |
| 2003 | 3.3 | 4.42 | 1.99 |
| 2002 | 5.03 | 5.69 | 3.87 |
| 2001 | 7.04 | 8.21 | 5.87 |