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 2

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

Year	Attention	Industry added value (billion yuan)
		Primary		Secondary		Tertiary
2014	1051	403.1	0.13	1543.5	0.50	1133.4	0.37
2015	1215	402.8	0.13	1500.7	0.48	1241.9	0.39
2016	1124	417.2	0.13	1576.4	0.47	1343.7	0.40
2017	1468	405.4	0.11	1783.7	0.49	1477.2	0.40
2018	1491	313.3	0.09	1558	0.45	1583.3	0.46
2019	1416	342.4	0.09	1554.6	0.45	1589.1	0.46