| 年份 | 单位：‰ |
| 含“(E)”其对应值为系统预测，仅供参考。 | |
| 2026（E） | 购买后可见 » |
| 2025（E） | 购买后可见 » |
| 2024（E） | 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 | 购买后可见 » |
| 2013 | 12.08 |
| 2012 | 12.10 |
| 2011 | 11.93 |
| 2010 | 11.90 |
| 2009 | 11.95 |
| 2008 | 12.14 |
| 2007 | 12.10 |
| 2006 | 12.09 |
| 2005 | 12.40 |
| 2004 | 12.29 |
| 2003 | 12.41 |
| 2002 | 12.86 |
| 2001 | 13.38 |
| 2000 | 14.03 |
| 1999 | 14.64 |
| 1998 | 15.64 |
| 1997 | 16.57 |
| 1996 | 16.98 |
| 1995 | 17.12 |
| 1994 | 17.70 |
| 1993 | 18.09 |
| 1992 | 18.24 |
| 1991 | 19.68 |
| 1990 | 21.06 |
| 1989 | 21.58 |
| 1988 | 22.37 |
| 1987 | 23.33 |
| 1986 | 22.43 |
| 1985 | 21.04 |
| 1984 | 19.90 |
| 1983 | 20.19 |
| 1982 | 22.28 |
| 1981 | 20.91 |
| 1980 | 18.21 |
| 1979 | 17.82 |
| 1978 | 18.25 |
| 1977 | 18.93 |
| 1976 | 19.91 |
| 1975 | 23.01 |
| 1974 | 24.82 |
| 1973 | 27.93 |
| 1972 | 29.77 |
| 1971 | 30.65 |
| 1970 | 33.43 |
| 1969 | 34.11 |
| 1968 | 35.59 |
| 1967 | 33.96 |
| 1966 | 35.05 |
| 1965 | 37.88 |
| 1964 | 39.14 |
| 1963 | 43.37 |
| 1962 | 37.01 |
| 1961 | 18.02 |
| 1960 | 20.86 |
| 1959 | 24.78 |
| 1958 | 29.22 |
| 1957 | 34.03 |
| 1956 | 31.90 |
| 1955 | 32.60 |
| 1954 | 37.97 |
| 1953 | 37.00 |
| 1952 | 37.00 |
| 1951 | 37.80 |
| 1950 | 37.00 |
| 1949 | 36.00 |
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