| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2000 | |
| 2 | 1999 | |
| 3 | 1998 | |
| 4 | 1997 | |
| 5 | 1996 | |
| 6 | 1995 | |
| 7 | 1994 | 2.51 |
| 8 | 1993 | 6.55 |
| 9 | 1992 | 5.55 |
| 10 | 1991 | 8.53 |
| 11 | 1990 | 6.42 |
| 12 | 1989 | 3.36 |
| 13 | 1988 | 4.51 |
| 14 | 1987 | 4.76 |
| 15 | 1986 | 7.85 |
| 16 | 1985 | 7.57 |
| 17 | 1984 | 4.00 |
| 18 | 1983 | 2.22 |
| 19 | 1982 | 1.96 |
| 20 | 1981 | 3.24 |
| 21 | 1980 | 3.97 |
| 22 | 1979 | 2.03 |
| 23 | 1978 | 11.76 |
| 24 | 1977 | 15.71 |
| 25 | 1976 | 17.62 |
