| 序号 | 时间 | 最低 |
|---|---|---|
| 1 | 2010-12-31 | 7.19 |
| 2 | 2011-12-30 | 6.98 |
| 3 | 2012-12-31 | 5.15 |
| 4 | 2013-12-31 | 7.97 |
| 5 | 2014-12-31 | 7.02 |
| 6 | 2015-12-31 | 7.85 |
| 7 | 2016-12-30 | 8.42 |
| 8 | 2017-10-25 | 8.98 |
| 9 | 2018-12-28 | 6.48 |
| 10 | 2019-12-31 | 7.23 |
| 11 | 2020-12-31 | 7.37 |
| 12 | 2021-12-31 | 7.49 |
| 13 | 2022-12-30 | 5.71 |
| 14 | 2023-12-29 | 6.37 |
| 15 | 2024-07-26 | 5.88 |