| 序号 | 时间 | 最低 |
|---|---|---|
| 1 | 1997-12-31 | 1.93 |
| 2 | 1998-12-31 | 1.26 |
| 3 | 1999-12-30 | 1.00 |
| 4 | 2000-12-29 | 1.19 |
| 5 | 2001-12-31 | 1.78 |
| 6 | 2002-12-31 | 0.59 |
| 7 | 2003-12-31 | 1.08 |
| 8 | 2004-12-31 | 1.11 |
| 9 | 2005-12-30 | -0.24 |
| 10 | 2006-10-11 | 0.10 |
| 11 | 2007-12-28 | 3.45 |
| 12 | 2008-12-31 | 4.00 |
| 13 | 2009-12-31 | 4.78 |
| 14 | 2010-12-31 | 5.40 |
| 15 | 2011-12-30 | 4.00 |
| 16 | 2012-12-31 | 3.98 |
| 17 | 2013-12-31 | 3.90 |
| 18 | 2014-12-31 | 4.13 |
| 19 | 2015-12-31 | 7.26 |
| 20 | 2016-12-30 | 7.38 |
| 21 | 2017-12-29 | 8.35 |
| 22 | 2018-12-28 | 4.65 |
| 23 | 2019-12-31 | 5.74 |
| 24 | 2020-12-31 | 6.15 |
| 25 | 2021-12-31 | 6.64 |
| 26 | 2022-12-30 | 5.27 |
| 27 | 2023-12-29 | 6.01 |
| 28 | 2024-07-26 | 5.62 |