| 序号 | 时间 | 最低 |
|---|---|---|
| 1 | 2008-12-31 | 1.35 |
| 2 | 2009-12-31 | 2.44 |
| 3 | 2010-12-31 | 4.20 |
| 4 | 2011-12-30 | 3.67 |
| 5 | 2012-12-31 | 2.23 |
| 6 | 2013-12-31 | 2.68 |
| 7 | 2014-12-31 | 6.78 |
| 8 | 2015-12-31 | 8.29 |
| 9 | 2016-12-30 | 11.46 |
| 10 | 2017-12-29 | 7.29 |
| 11 | 2018-12-28 | 3.28 |
| 12 | 2019-12-31 | 3.82 |
| 13 | 2020-12-31 | 6.00 |
| 14 | 2021-12-31 | 6.13 |
| 15 | 2022-12-30 | 4.67 |
| 16 | 2023-12-29 | 6.63 |
| 17 | 2024-07-26 | 9.65 |