| 序号 | 时间 | 最低 |
|---|---|---|
| 1 | 2010-12-31 | 2.21 |
| 2 | 2011-12-30 | 0.53 |
| 3 | 2012-12-31 | 0.43 |
| 4 | 2013-12-31 | 1.67 |
| 5 | 2014-12-19 | 2.80 |
| 6 | 2015-12-31 | 3.10 |
| 7 | 2016-12-30 | 3.16 |
| 8 | 2017-12-01 | 5.11 |
| 9 | 2018-12-28 | 11.66 |
| 10 | 2019-12-31 | 14.55 |
| 11 | 2020-12-31 | 15.28 |
| 12 | 2021-12-31 | 18.79 |
| 13 | 2022-12-30 | 16.72 |
| 14 | 2023-12-29 | 13.74 |
| 15 | 2024-07-26 | 11.30 |