Year	SOx	NOx	NH3	PM10	PM2.5	NMVOC	CO	CH4	BC	As	Cd	Ni	Pb	Hg	BaP
2004	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100
2005	94.15	97.49	98.54	97.26	96.88	97.24	91.29	97.86	96.04	101.22	95.34	99.4	96.18	98.1	104.05
2006	92.05	94.97	98.95	94.99	93.95	94.65	87.27	96.31	92.06	102.25	91.58	93.68	94.7	97.06	104.49
2007	87.73	91.69	98.94	93.12	91.6	90.55	83.34	94.44	89.18	100.29	84.22	86.54	93.88	94.14	102.68
2008	68	84.93	96.9	90.8	90.39	86.55	80.49	92.73	86.65	94.73	82.41	81.43	89.59	90.66	108.12
2009	58.14	77.64	96.03	86.79	87.09	80.48	73.31	90.43	83.08	84.69	67.65	66.54	60.38	65.78	102.05
2010	54.89	76.66	94.57	89.16	89.25	81.18	76.42	89.09	82.17	88.15	68.67	59.19	65.3	65.25	110.35
2011	54.18	73.91	94.7	86.19	84.79	77.66	71.45	87.28	75.19	88.29	65.02	52.17	63.19	63.92	107.05
2012	48.83	70.95	93.8	84.14	83.36	75.04	66.6	86.55	72.16	84.5	62.26	49.3	63.25	61.55	106.32
2013	41.98	67.8	93.68	85.27	85.41	74.34	68.61		69.9	81.61	61.76	48.33	61.19	59.92	110.32