Using the Grey Model to Analyze the Impact of the Primary, Secondary, and Tertiary Industries on the Public’s Attention to Air Pollution in Three Cities

Table 10

Attention to air pollution and added value, proportion of primary, secondary, and tertiary industry in Shijiazhuang.

Year	Attention	Industry added value (billion yuan)
		Primary		Secondary		Tertiary
2014	2278	488.3	0.10	2439.3	0.48	2172.6	0.43
2015	2161	494.4	0.09	2452.9	0.45	2493.3	0.46
2016	2128	480.9	0.08	2638	0.45	2738.9	0.47
2017	2418	480.5	0.07	2913.9	0.45	3066.4	0.47
2018	2286	420.5	0.07	2285.5	0.38	3376.7	0.56
2019	2168	449.5	0.08	1831.7	0.32	3528.7	0.61