| 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 | 46.27 |
| 2012 | 47.43 |
| 2011 | 48.73 |
| 2010 | 50.05 |
| 2009 | 51.66 |
| 2008 | 53.01 |
| 2007 | 54.11 |
| 2006 | 55.66 |
| 2005 | 57.01 |
| 2004 | 58.24 |
| 2003 | 59.47 |
| 2002 | 60.91 |
| 2001 | 62.34 |
| 2000 | 63.78 |
| 1999 | 65.22 |
| 1998 | 66.65 |
| 1997 | 68.09 |
| 1996 | 69.52 |
| 1995 | 70.96 |
| 1994 | 71.49 |
| 1993 | 72.01 |
| 1992 | 72.54 |
| 1991 | 73.06 |
| 1990 | 73.59 |
| 1989 | 73.79 |
| 1988 | 74.19 |
| 1987 | 74.68 |
| 1986 | 75.48 |
| 1985 | 76.29 |
| 1984 | 76.99 |
| 1983 | 78.38 |
| 1982 | 78.87 |
| 1981 | 79.84 |
| 1980 | 80.61 |
| 1979 | 81.04 |
| 1978 | 82.08 |
| 1977 | 82.45 |
| 1976 | 82.56 |
| 1975 | 82.66 |
| 1974 | 82.84 |
| 1973 | 82.80 |
| 1972 | 82.87 |
| 1971 | 82.74 |
| 1970 | 82.62 |
| 1965 | 82.02 |
| 1962 | 82.67 |
| 1960 | 80.25 |
| 1957 | 84.61 |
| 1955 | 86.52 |
| 1952 | 87.54 |
| 1951 | 88.22 |
| 1950 | 88.82 |
| 1949 | 89.36 |
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