| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2004 | |
| 2 | 2003 | |
| 3 | 2002 | |
| 4 | 2001 | |
| 5 | 2000 | |
| 6 | 1999 | |
| 7 | 1998 | |
| 8 | 1997 | |
| 9 | 1996 | |
| 10 | 1995 | |
| 11 | 1994 | 39.77 |
| 12 | 1993 | 36.95 |
| 13 | 1992 | 45.70 |
| 14 | 1991 | 52.16 |
| 15 | 1990 | 48.95 |
| 16 | 1989 | 52.75 |
| 17 | 1988 | 51.92 |
| 18 | 1987 | 49.67 |
| 19 | 1986 | 51.35 |
| 20 | 1985 | 52.44 |
| 21 | 1984 | 53.15 |
| 22 | 1983 | 53.45 |
| 23 | 1982 | 60.50 |
| 24 | 1981 | 58.74 |
| 25 | 1980 | 53.32 |
| 26 | 1979 | 45.59 |
| 27 | 1978 | 45.42 |
| 28 | 1977 | 46.27 |
| 29 | 1976 | 40.78 |
| 30 | 1975 | 46.16 |
| 31 | 1974 | 39.84 |
| 32 | 1973 | 34.82 |
| 33 | 1972 | 48.25 |
| 34 | 1971 | 58.24 |
| 35 | 1970 | 53.94 |
| 36 | 1969 | 45.90 |
| 37 | 1968 | 40.07 |
| 38 | 1967 | 39.63 |
| 39 | 1966 | 40.13 |
| 40 | 1965 | 37.98 |
| 41 | 1964 | 34.30 |
| 42 | 1963 | 30.97 |
| 43 | 1962 | 27.92 |
| 44 | 1961 | 28.13 |
