| 序号 | 时间 | 最低 |
|---|---|---|
| 1 | 2011-12-30 | 4.14 |
| 2 | 2012-12-31 | 3.41 |
| 3 | 2013-12-31 | 4.11 |
| 4 | 2014-10-24 | 4.18 |
| 5 | 2015-12-31 | 8.44 |
| 6 | 2016-12-30 | 29.32 |
| 7 | 2017-12-29 | 30.83 |
| 8 | 2018-12-28 | 17.03 |
| 9 | 2019-12-31 | 16.32 |
| 10 | 2020-12-31 | 15.30 |
| 11 | 2021-12-31 | 8.90 |
| 12 | 2022-12-30 | 6.97 |
| 13 | 2023-12-29 | 7.66 |
| 14 | 2024-07-26 | 7.98 |