調查日期   Date of survey	即日調查/跟進調查  Instant survey / Follow-up survey	成功樣本   Successful Sample	回應率   Response Rate	標準誤差   Standard Error
18-20/3/2002	跟進調查   Follow-up survey	1216	60.1%	1.4%
6/3/2002	即日調查   Instant survey	1041	59.9%	1.5%
30-31/3/2001	跟進調查   Follow-up survey	511	73.3%	2.2%
7-8/3/2001	即日調查   Instant survey	502	67.1%	2.2%
20/3/2000	跟進調查   Follow-up survey	660	56.7%	2.0%
8/3/2000	即日調查   Instant survey	856	56.4%	1.7%
18/3/1999	跟進調查   Follow-up survey	530	55.4%	2.2%
3/3/1999	即日調查   Instant survey	1190	62.1%	1.8%
24/2/1998	跟進調查   Follow-up survey	538	56.7%	2.2%
18/2/1998	即日調查   Instant survey	804	54.7%	1.8%