| 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 | 2.14 |
| 2013 | 2.28 |
| 2012 | 2.63 |
| 2011 | 2.50 |
| 2010 | 2.60 |
| 2009 | 2.60 |
| 2008 | 2.19 |
| 2007 | 2.05 |
| 2006 | 1.60 |
| 2005 | 1.43 |
| 2004 | 1.34 |
| 2003 | 1.10 |
| 2002 | 1.45 |
| 2001 | 1.64 |
| 2000 | 1.55 |
| 1999 | 2.95 |
| 1998 | 3.40 |
| 1997 | 3.03 |
| 1996 | 3.56 |
| 1995 | 4.00 |
| 1994 | 4.79 |
| 1993 | 4.51 |
| 1992 | 6.50 |
| 1991 | 6.16 |
| 1990 | 9.83 |
| 1989 | 9.01 |
| 1988 | 10.27 |
| 1987 | 10.99 |
| 1986 | 9.29 |
| 1985 | 8.15 |
| 1984 | 10.24 |
| 1983 | 11.73 |
| 1982 | 14.41 |
| 1981 | 11.91 |
| 1980 | 7.25 |
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