| 序号 | 时间 (年) |
数据 (%) |
|---|---|---|
| 1 | 2008 | |
| 2 | 2007 | |
| 3 | 2006 | |
| 4 | 2005 | |
| 5 | 2004 | |
| 6 | 2000 | |
| 7 | 1999 | 5.48 |
| 8 | 1998 | 5.65 |
| 9 | 1997 | 5.48 |
| 10 | 1996 | 5.08 |
| 11 | 1995 | 5.79 |
| 12 | 1994 | 5.76 |
| 13 | 1993 | 6.16 |
| 14 | 1992 | 6.76 |
| 15 | 1991 | 6.65 |
| 16 | 1983 | 7.66 |
| 17 | 1982 | 7.49 |
| 18 | 1981 | 1.42 |
| 19 | 1980 | 0.54 |
| 20 | 1979 | 0.02 |
| 21 | 1978 | 0.02 |
