[Retracted] Urban Management in the Dynamic Relationship between the Occurrence of Environmental Pollution Accidents and Economic Development in China

Table 4

Air pollutant emissions by region (unit: million tons).

Year	SO2 emissions				NOx emissions				Smoke (dust) emissions
	National	East	Central	West	National	East	Central	West	National	East	Central	West
2011	2329.01	804.29	629.23	821.28	2515.37	113.27	737.03	690.87	1389.93	457.02	458.8	399.91
2012	2228.73	764.07	597.3	793.16	2448.86	973.52	709.49	691.65	1346.87	431.32	426.75	414.6
2013	2155.02	728.98	580.27	771.57	2338.4	907.44	679.32	677.5	1389.24	448.23	432.67	434.14
2014	2085.52	697.14	560.87	753.3	2189.1	844.6	637.51	632.79	1851.85	657.2	589.58	530.87
2015	1970.22	657.51	536.21	702.29	1962.12	755.16	568.77	563.99	1649.11	574.63	543.74	56.54
2016	1213.96	413.11	294.02	432.64	1505.41	597.86	418.34	415	1121.76	428.92	309.15	309.5