Year	PM2.5	PM10	O3	NO2	BaP	SO2
2000		52.6	25	25.8
2001		38.9	42.1	21
2002		40	26.9	22.5
2003		46.9	63.9	31.9
2004		33.3	22.9	19.2
2005		40.6	28.3	20.1
2006	20.4	45.3	54.9	16
2007	13.7	33.2	26.1	19.8
2008	15.1	26	18.4	11.3
2009	11.5	26.7	19.8	12.9
2010	13.3	27.9	21.3	9.6
2011	17.6	33.5	19.8	10.3
2012	13.8	25	18.9	7.5
2013	8.7	21.5	17.4	9.4
2014	8.2	16.4	7.3	8.1
2015	7.2	22.7	29.4	8.4
2016	5.5	12.9	12	7.1
2017	7.8	16.8	16.5	6.4
2018	3.8	14.8	34.2	3.5
2019	1	9.8	20.6	3.3