| 序号 | 时间 | 最低 |
|---|---|---|
| 1 | 2011-12-30 | 7.37 |
| 2 | 2012-12-31 | 5.09 |
| 3 | 2013-12-31 | 5.44 |
| 4 | 2014-12-31 | 8.04 |
| 5 | 2015-12-31 | 7.26 |
| 6 | 2016-12-30 | 6.49 |
| 7 | 2017-12-29 | 9.08 |
| 8 | 2018-12-28 | 5.35 |
| 9 | 2019-12-31 | 5.49 |
| 10 | 2020-12-31 | 6.77 |
| 11 | 2021-12-31 | 13.38 |
| 12 | 2022-12-30 | 18.32 |
| 13 | 2023-12-29 | 21.21 |
| 14 | 2024-07-26 | 14.16 |