調查日期 <br> Date of survey	18 - 29	30+	整體  <br>Overall
26-27/8/1997	37.3%	48.3%	44.9%
23-24/9/1997	41.9%	45.1%	44.5%
28-29/10/1997	31.3%	47.3%	42.7%
8-9/12/1997	37.6%	45.4%	41.8%
3-4/6/1998	33.5%	39.6%	37.3%
22-24/6/1998	37.0%	43.4%	41.3%
14/8/1998	40.4%	47.3%	45.3%
29/9/1998	33.0%	44.9%	41.4%
21/12/1998	25.5%	42.5%	37.4%
8-9/2/1999	28.7%	39.8%	36.2%
15/4/1999	37.6%	32.4%	33.1%
8/6/1999	30.9%	38.7%	36.2%
6/8/1999	34.6%	42.5%	40.8%
26-27/10/1999	35.2%	41.5%	39.9%
13-15/12/1999	26.7%	44.2%	38.1%
1-2/2/2000	31.0%	47.4%	42.7%
6-7/4/2000	35.3%	34.8%	35.6%
7-8/6/2000	31.6%	38.8%	36.9%
21-25/9/2000	37.0%	42.4%	41.3%
4-12/12/2000	27.1%	35.2%	32.9%
22/3-2/4/2001	34.1%	38.2%	37.7%
1-5/6/2001	29.0%	33.0%	31.6%
13-21/9/2001	39.6%	49.1%	45.5%
7-9/12/2001	28.0%	31.8%	30.9%
12-13/3/2002	34.3%	44.2%	41.2%
4-5/6/2002	25.9%	32.2%	31.1%
2-5/9/2002	35.5%	37.7%	37.0%
13-18/12/2002	32.8%	37.4%	35.6%
1-4/3/2003	33.0%	39.4%	37.3%
13-18/6/2003	25.5%	32.5%	31.1%
10-14/12/2003	40.6%	39.0%	39.0%
7-11/6/2004	34.0%	36.8%	35.5%
6-9/12/2004	38.6%	40.9%	39.3%
6-8/6/2005	27.0%	39.5%	35.9%
9-14/12/2005	39.5%	44.5%	43.4%
13-15/6/2006	33.3%	41.7%	40.0%
6-12/12/2006	36.6%	46.0%	44.4%
8-12/6/2007	41.8%	50.1%	48.5%
11-14/12/2007	49.1%	47.4%	47.5%
11-13/6/2008	47.6%	41.4%	42.5%
9-12/12/2008	38.1%	43.6%	42.6%
8-13/6/2009	41.8%	46.4%	45.3%
8-11/12/2009	34.9%	37.5%	37.0%
9-13/6/2010	42.1%	47.1%	46.0%
13-16/12/2010	37.0%	43.0%	41.4%
21-22/6/2011	29.6%	32.3%	31.7%
12-20/12/2011	41.5%	43.6%	43.1%
13-20/6/2012	21.5%	37.5%	34.4%
14-17/12/2012	49.2%	48.9%	49.0%
10-13/6/2013	34.5%	36.7%	36.3%
9-12/12/2013	33.2%	44.9%	42.6%
6-12/6/2014	43.3%	37.0%	38.7%
10-16/12/2014	32.8%	41.0%	39.4%	
15-18/6/2015	31.7%	42.1%	40.4%	
3-7/12/2015	36.2%	41.6%	40.7%