[Retracted] Infrastructure Smart Service System Based on Big Data Information System

Table 4

Household income and social role survey.

Item	No.	Category	Number of people	Proportion
Social role	1	Management	5	11
	2	Design unit	21	41
	3	Contractor	24	48
Income level	1	1–2 million	54	18
	2	20–70,000	132	44
	3	70–120000	60	20
	4	Greater than 120,000	66	22