Year SOx NMVOC NOx PM2.5 NH3 Primary PM2.5 SOx change NMVOC change NOx change PM2.5 change NH3 change
1990 27199 17062 17644 5200 100 100 100 100
1991 25018 16414 17249 5484 91.98 96.67 97.8 96.22
1992 23024 15729 16883 5216 84.65 93.13 96.0 92.06
1993 21748 15072 16174 5078 79.96 89.69 92.46 89.67
1994 20237 13937 15457 4948 74.4 83.53 88.58 87.67
1995 18552 13388 15098 4883 68.21 80.6 86.94 86.04
1996 17431 13252 14936 4921 64.09 79.96 86.39 86.8
1997 16511 12830 14318 4903 60.7 77.66 83.12 86.52
1998 15030 12342 13946 4926 55.26 74.93 81.06 87.14
1999 13293 11691 13437 4939 48.87 71.4 78.46 87.45
2000 12308 10919 13066 1732 4848 45.25 67.5 75.81 100 86.17
2001 11622 10446 12824 1689 4779 42.73 64.38 74.33 97.76 84.48
2002 10991 9954 12531 1598 4703 40.41 61.45 72.6 92.55 82.87
2003 10517 9606 12451 1630 4720 38.67 59.47 72.28 94.01 83.87
2004 9934 9298 12258 1589 4690 36.52 57.6 71.37 91.77 82.75
2005 9732 9055 11986 1591 4651 35.78 55.91 70.15 91.77 82.31
2006 9706 8853 11696 1548 4687 35.69 54.65 68.74 89.53 82.56
2007 9721 8483 11295 1532 4677 35.74 52.54 67.08 88.41 82.18
2008 8164 8108 10471 1523 4565 30.02 50.35 62.35 88.02 79.84
2009 7447 7537 9565 1470 4518 27.38 47.36 57.3 84.83 78.81
2010 7045 7555 9377 1504 4473 25.9 47.52 56.18 86.9 78.36
2011 7022 7149 9024 1382 4509 25.82 45.42 54.81 79.68 79.17
2012 6639 6990 8669 1403 4532 24.41 44.84 52.63 81.08 80.2
2013 5288 6837 8281 1382 5068 19.44 43.77 50.29 79.73 80.8
2014 5205 6552 7913 1270 5097 19.14 42.3 48.16 73.29 81.6
2015 4796 6581 7751 1283 5098 17.63 42.61 47.75 73.96 82.39