| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 2.38 | 3.11 | 1.7 |
| 2024 | 1.78 | 2.26 | 1.32 |
| 2023 | 2.87 | 4.21 | 2.15 |
| 2022 | 2.5 | 3.86 | 1.76 |
| 2021 | 2.76 | 5.24 | 1.87 |
| 2020 | 1.54 | 2.54 | 0.92 |
| 2019 | 1.19 | 1.58 | 0.96 |
| 2018 | 1.23 | 1.62 | 0.93 |
| 2017 | 1.98 | 2.63 | 1.47 |
| 2016 | 2.2 | 3.1 | 1.92 |
| 2015 | 3.49 | 5.33 | 2.44 |
| 2014 | 2.99 | 7.18 | 2.08 |
| 2013 | 2.05 | 2.46 | 1.66 |
| 2012 | 2.25 | 2.97 | 1.44 |
| 2011 | 4.16 | 5.98 | 2.27 |
| 2010 | 4.41 | 5.54 | 3.31 |
| 2009 | 3.03 | 4.51 | 1.99 |
| 2008 | 3.41 | 6.01 | 1.62 |
| 2007 | 4.86 | 6.38 | 3.15 |
| 2006 | 2.09 | 3.11 | 1.44 |
| 2005 | 1.4 | 1.92 | 1.02 |
| 2004 | 2.18 | 2.87 | 1.78 |
| 2003 | 2.62 | 3.24 | 1.96 |
| 2002 | 4.51 | 5.56 | 2.88 |
| 2001 | 5.67 | 7.42 | 3.83 |
| 2000 | 5.2 | 7.12 | 3.63 |
| 1999 | 3.88 | 4.83 | 3.05 |