| 序号 | 时间 | 最低 |
|---|---|---|
| 1 | 2011-12-30 | 16.76 |
| 2 | 2012-12-31 | 9.90 |
| 3 | 2013-12-31 | 13.17 |
| 4 | 2014-12-31 | 11.48 |
| 5 | 2015-12-31 | 22.51 |
| 6 | 2016-12-30 | 25.64 |
| 7 | 2017-12-29 | 33.27 |
| 8 | 2018-12-28 | 33.90 |
| 9 | 2019-12-31 | 32.92 |
| 10 | 2020-12-31 | 32.56 |
| 11 | 2021-12-31 | 35.00 |
| 12 | 2022-12-30 | 21.72 |
| 13 | 2023-12-29 | 27.34 |
| 14 | 2024-07-26 | 27.35 |