| 序号 | 时间 | 最低 |
|---|---|---|
| 1 | 2012-12-31 | 2.45 |
| 2 | 2013-12-31 | 3.49 |
| 3 | 2014-12-31 | 7.27 |
| 4 | 2015-12-31 | 8.68 |
| 5 | 2016-12-30 | 6.48 |
| 6 | 2017-12-29 | 7.92 |
| 7 | 2018-12-28 | 6.29 |
| 8 | 2019-12-31 | 7.00 |
| 9 | 2020-12-31 | 14.06 |
| 10 | 2021-12-31 | 12.37 |
| 11 | 2022-12-30 | 8.90 |
| 12 | 2023-12-29 | 12.68 |
| 13 | 2024-07-26 | 10.54 |