Statistical variables		Quantity	Proportion (%)
Gender	Male	152	42.0
Gender	Female	210	58.0
Age	19 - 25 years old	95	26.2
	26 - 30 years old	135	37.3
	31 - 40 years old	87	24.0
	41 - 50 years old	41	11.3
	Over 50	4	1.1
Education level	Junior high school and below	29	8.0
	High school	113	31.2
	Undergraduate/Junior College	192	53.0
	Master degree or above	28	7.7
Average monthly income/living expenses	Less than 5000	235	64.9
	5001 - 10,000	83	22.9
	10,001 - 20,000	33	9.1
	More than 20,000	11	3.0
Number of cars owned by households	0 vehicles	85	23.5
	1 vehicles	199	55.0
	2 vehicles	59	16.3
	3 and above	19	5.2