| 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 | 41.00 |
| 2012 | 41.50 |
| 2011 | 41.90 |
| 2010 | 42.40 |
| 2009 | 43.00 |
| 2008 | 44.00 |
| 2007 | 44.90 |
| 2006 | 46.60 |
| 2005 | 48.58 |
| 2004 | 50.31 |
| 2003 | 53.10 |
| 2002 | 55.80 |
| 2001 | 57.60 |
| 2000 | 59.30 |
| 1999 | 56.30 |
| 1998 | 55.60 |
| 1997 | 56.10 |
| 1996 | 56.80 |
| 1995 | 59.80 |
| 1994 | 61.10 |
| 1993 | 64.00 |
| 1992 | 67.50 |
| 1991 | 68.90 |
| 1990 | 68.90 |
| 1989 | 68.10 |
| 1988 | 68.40 |
| 1987 | 69.30 |
| 1986 | 70.10 |
| 1985 | 71.40 |
| 1984 | 73.80 |
| 1983 | 75.80 |
| 1982 | 77.00 |
| 1981 | 77.00 |
| 1980 | 77.00 |
| 1979 | 77.20 |
| 1978 | 78.40 |
| 1977 | 80.11 |
| 1976 | 80.59 |
| 1975 | 80.96 |
| 1974 | 81.83 |
| 1973 | 82.27 |
| 1972 | 81.87 |
| 1971 | 82.21 |
| 1970 | 83.17 |
| 1969 | 84.20 |
| 1968 | 84.26 |
| 1967 | 84.24 |
| 1966 | 84.32 |
| 1965 | 84.14 |
| 1964 | 84.52 |
| 1963 | 84.73 |
| 1962 | 84.24 |
| 1961 | 80.88 |
| 1960 | 67.90 |
| 1959 | 58.77 |
| 1958 | 61.47 |
| 1957 | 83.79 |
| 1956 | 83.04 |
| 1955 | 84.86 |
| 1954 | 80.30 |
| 1953 | 83.59 |
| 1952 | 83.23 |
| 1951 | 87.29 |
| 1950 | 88.54 |
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