6-12 ��Դ���ѵ���ϵ�� |
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| �� �� | ��Դ���� | �������� | ����������ֵ | ��Դ���� | �������� |
| ���������� | ���������� | ���������� | ����ϵ�� | ����ϵ�� | |
| 1984 | 11.0 | 20.0 | 15.0 | 0.7 | 1.3 |
| 1985 | 9.0 | 21.0 | 18.0 | 0.5 | 1.2 |
| 1986 | 6.0 | 16.0 | 9.0 | 0.7 | 1.7 |
| 1987 | 4.0 | 14.0 | 16.0 | 0.3 | 0.9 |
| 1988 | 10.0 | 15.0 | 24.0 | 0.4 | 0.6 |
| 1989 | 3.0 | 9.0 | 13.0 | 0.2 | 0.7 |
| 1990 | - 3.0 | 1.0 | 19.0 | - 0.2 | 0.1 |
| 1991 | 7.0 | 13.0 | 14.0 | 0.5 | 0.9 |
| 1992 | 4.0 | 14.0 | 16.0 | 0.3 | 0.9 |
| 1993 | 2.0 | - 3.0 | 26.0 | 0.1 | - 0.1 |
| 1994 | 7.0 | 26.0 | 35.0 | 0.2 | 0.7 |
| 1995 | 19.0 | 12.0 | 25.0 | 0.8 | 0.5 |
| 1996 | 4.0 | 1.0 | 19.0 | 0.2 | 0.1 |
| 1997 | 1.0 | 7.0 | 11.0 | 0.1 | 0.6 |
| 1998 | 1.0 | - 3.0 | 8.0 | 0.1 | - 0.4 |
| 1999 | - 4.0 | 2.0 | 5.6 | - 0.7 | 0.4 |