| 序号 | 时间 | 最低 |
|---|---|---|
| 1 | 2012-12-31 | 2.79 |
| 2 | 2013-12-31 | 3.82 |
| 3 | 2014-12-31 | 5.70 |
| 4 | 2015-12-31 | 8.55 |
| 5 | 2016-12-30 | 12.74 |
| 6 | 2017-12-27 | 9.99 |
| 7 | 2018-12-28 | 8.41 |
| 8 | 2019-12-31 | 8.42 |
| 9 | 2020-12-31 | 8.77 |
| 10 | 2021-12-31 | 7.89 |
| 11 | 2022-12-30 | 12.76 |
| 12 | 2023-12-29 | 18.42 |
| 13 | 2024-07-26 | 17.10 |