人口變項
Demographic profile of respondents
6-12/12/06
23-27/10/06
11-15/8/06
13-15/6/06
18-21/4/06
9-14/2/06
15-19/12/05
17-21/10/05
22-25/8/05
20-23/6/05
11-14/4/05
17-20/2/05