7.2 �� �� �� �� �� �� �� Ŀ �� ��

�� �� 2007 �� 8 �� �� �� �� �� �� �� �� �� �� �� �� Ŀ �� �� �� �� �� 271 �� Ƶ �� �� �� �� 37.6% ( 102 �� Ƶ �� ) �� �� �� �� �� �� �� �� �� 62.4% ( 169 �� Ƶ �� ) �� �� �� �� �� �� �� �� �� �� �� �� Ҫ �� �� �� (26.6% �� 72 �� Ƶ �� ) �� �� �� (6.3% �� 17 �� Ƶ �� ) �� ŷ �� �� �� ( 4.8% �� 13 �� Ƶ �� ) �� ӡ �� ( 3.7% �� 10 �� Ƶ �� ) ��

ͼ 20 :

�� �� �� �� �� �� �� Ŀ �� �� �� �� Ŀ �� Դ

�� �� �� ��