| 年份 | 单位:‰ |
| 含“(E)”其对应值为系统预测,仅供参考。 | |
| 2027(E) | 购买后可见 » |
| 2026(E) | 购买后可见 » |
| 2025(E) | 购买后可见 » |
| 2024 | 购买后可见 » |
| 2023 | 购买后可见 » |
| 2022 | 购买后可见 » |
| 2021 | 购买后可见 » |
| 2020 | 购买后可见 » |
| 2019 | 购买后可见 » |
| 2018 | 购买后可见 » |
| 2017 | 购买后可见 » |
| 2016 | 购买后可见 » |
| 2015 | 购买后可见 » |
| 2014 | 8.19 |
| 2013 | 8.28 |
| 2012 | 8.75 |
| 2011 | 8.58 |
| 2010 | 8.18 |
| 2009 | 8.30 |
| 2008 | 8.13 |
| 2007 | 7.91 |
| 2006 | 7.67 |
| 2005 | 7.44 |
| 2004 | 7.31 |
| 2003 | 7.14 |
| 2002 | 7.49 |
| 2001 | 7.58 |
| 2000 | 7.72 |
| 1999 | 9.68 |
| 1998 | 9.89 |
| 1997 | 9.98 |
| 1996 | 10.09 |
| 1995 | 10.23 |
| 1994 | 10.98 |
| 1993 | 10.71 |
| 1992 | 12.50 |
| 1991 | 11.94 |
| 1990 | 15.62 |
| 1989 | 15.50 |
| 1988 | 15.92 |
| 1987 | 17.07 |
| 1986 | 15.00 |
| 1985 | 13.94 |
| 1984 | 15.67 |
| 1983 | 17.14 |
| 1982 | 20.05 |
| 1981 | 17.90 |
| 1980 | 13.29 |
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