Year PM2.5 PM10 O3 NO2 BaP SO2
2000 32.4 17.9 25.9
2001 30.1 30.5 22.3
2002 31.5 20.7 23.1
2003 41.8 54.9 31
2004 28.2 19.4 20.6
2005 34 22.7 21.4
2006 16.5 37.8 45.5 18.2
2007 11.5 30.4 21.8 20.7
2008 12.5 23.9 15.3 12.3
2009 8.8 24.4 16.1 14.3
2010 10.8 25.2 17.4 11.7
2011 13.6 29.6 16.1 11.9
2012 11.5 21.9 15.5 8.8
2013 8.5 20.5 16.2 9.1
2014 8 16.3 7.3 7.6
2015 7.4 18.6 29.4 8.4
2016 5.5 12.9 12.2 7.2
2017 8.0 17.2 13.9 6.5