| 序号 | 时间 | 最低 |
|---|---|---|
| 1 | 2008-12-31 | 0.46 |
| 2 | 2009-12-31 | 0.70 |
| 3 | 2010-12-31 | 1.19 |
| 4 | 2011-12-30 | 1.35 |
| 5 | 2012-12-31 | 1.40 |
| 6 | 2013-12-31 | 1.65 |
| 7 | 2014-12-31 | 5.82 |
| 8 | 2015-12-31 | 11.75 |
| 9 | 2016-12-30 | 19.70 |
| 10 | 2017-12-29 | 18.99 |
| 11 | 2018-12-28 | 6.09 |
| 12 | 2019-12-31 | 5.66 |
| 13 | 2020-12-31 | 7.02 |
| 14 | 2021-12-31 | 6.27 |
| 15 | 2022-12-30 | 4.92 |
| 16 | 2023-12-29 | 6.00 |
| 17 | 2024-07-26 | 5.90 |