調查年份<br>Year of survey	調查日期<br>Date of survey	成功樣本<br/>Successful cases	次樣本人數<br>Sub-sample	回應率<br/>Response rate	好Ｄ<br>Better	差不多<br>Same	差Ｄ<br>Worse	唔知／難講<br>DK/HS	合計<br>Total	樂觀淨值<br/>Net optimism
2005	26-28/12/2005	534	534	76.5%	71.5%	13.5%	4.3%	10.7%	100.0%	67.2%
2006	28/12/2006-4/1/2007	502	502	71.8%	71.9%	15.6%	6.2%	6.4%	100.0%	65.7%
2007	21-31/12/2007	519	519	72.3%	59.7%	19.3%	11.4%	9.7%	100.0%	48.3%
2008	29-30/12/2008	509	509	76.3%	20.8%	9.4%	59.7%	10.0%	100.0%	-38.9%
2009	29-30/12/2009	506	506	77.6%	59.3%	16.4%	8.5%	15.8%	100.0%	50.8%
2010	24-26/1/2011	508	508	72.7%	60.4%	20.7%	11.2%	7.7%	100.0%	49.2%
2011	17/11-9/12/2011	1022	585	71.7%	--	--	--	--	--	--
2012	23-28/12/2012	519	519	70.6%	55.3%	23.9%	10.7%	10.2%	100.0%	44.6%
2013	6-12/12/2013	511	511	69.6%	55.3%	28.9%	6.7%	9.0%	100.0%	48.6%
2014	1-3/12/2014	502	502	66.5%	34.4%	29.2%	29.1%	7.4%	100.0%	5.3%
2015	8-9/12/2015	510	510	65.7%	25.0%	35.6%	33.1%	6.3%	100.0%	-8.1%