| 年份 | 单位:% |
| 含“(E)”其对应值为系统预测,仅供参考。 | |
| 2018(E) | 购买后可见 » |
| 2017(E) | 购买后可见 » |
| 2016(E) | 购买后可见 » |
| 2015 | 购买后可见 » |
| 2014 | 购买后可见 » |
| 2013 | 购买后可见 » |
| 2012 | 购买后可见 » |
| 2011 | 购买后可见 » |
| 2010 | 购买后可见 » |
| 2009 | 购买后可见 » |
| 2008 | 购买后可见 » |
| 2007 | 购买后可见 » |
| 2006 | 购买后可见 » |
| 2005 | 1.04 |
| 2004 | 0.76 |
| 2003 | 0.63 |
| 2002 | 0.77 |
| 2001 | 0.55 |
| 2000 | 0.69 |
| 1999 | 0.67 |
| 1998 | 0.74 |
| 1997 | 0.53 |
| 1996 | 0.56 |
| 1995 | 0.59 |
| 1994 | 0.76 |
| 1993 | 0.67 |
| 1992 | 0.72 |
| 1991 | 0.64 |
| 1990 | 0.60 |
| 1989 | 0.64 |
| 1988 | 0.82 |
| 1987 | 0.63 |
| 1986 | 0.89 |
| 1985 | 0.83 |
| 1984 | 0.71 |
| 1983 | 0.82 |
| 1982 | 0.84 |
| 1981 | 0.90 |
| 1980 | 0.88 |
| 1979 | 0.83 |
| 1978 | 0.83 |
| 1977 | 0.89 |
| 1976 | 0.75 |
| 1975 | 0.67 |
| 1974 | 0.95 |
| 1973 | 0.80 |
| 1972 | 0.88 |
| 1971 | 0.60 |
| 1970 | 1.15 |
| 1969 | 0.87 |
| 1968 | 1.21 |
| 1967 | 1.34 |
| 1966 | 1.56 |
| 1965 | 1.86 |
| 1964 | 1.55 |
| 1963 | 1.36 |
| 1962 | 1.42 |
| 1961 | 1.61 |
| 1960 | 2.15 |
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