Year SOx NOx NH3 NMVOC Primary PM2.5 SOx change NOx change NH3 change NMVOC change PM2.5 change
1990 27643 18521 5887 18695 100 100 100 100 100
1991 25443 17983 5618 17817 92.042 97.096 95.439 95.302 101.124
1992 23563 17543 5367 17105 85.24 94.72 91.175 91.497 98.495
1993 22156 16907 5175 16486 80.151 91.287 87.908 88.184 96.678
1994 20637 16193 5049 15296 74.657 87.433 85.766 81.819 93.673
1995 18727 15917 4902 14886 67.747 85.942 83.275 79.624 91.553
1996 17623 15725 4935 14693 63.754 84.903 83.83 78.594 91.66
1997 16727 15188 4922 14292 60.511 82.007 83.605 76.449 88.984
1998 15168 14774 4931 13791 54.873 79.768 83.764 73.768 86.067
1999 13448 14341 4951 13152 48.649 77.434 84.11 70.351 83.894
2000 12507 14030 4845 12475 1617 45.245 75.753 82.307 66.732 81.394
2001 11824 13713 4773 11894 1617 42.776 74.042 81.08 63.623 81.422
2002 11163 13427 4689 11380 1576 40.384 72.496 79.658 60.874 79.332
2003 10672 13361 4722 11028 1571 38.606 72.138 80.219 58.991 79.073
2004 10124 13207 4682 10736 1548 36.624 71.308 79.538 57.428 77.943
2005 9877 12952 4640 10409 1502 35.733 69.93 78.825 55.68 75.596
2006 9871 12685 4674 10130 1456 35.71 68.493 79.408 54.188 73.288
2007 9906 12399 4651 9748 1420 35.837 66.944 79.011 52.141 71.502
2008 8225 11522 4539 9337 1401 29.754 62.212 77.103 49.943 70.54
2009 7512 10605 4509 8783 1349 27.174 57.26 76.589 46.979 67.932
2010 7151 10468 4466 8863 1385 25.871 56.52 75.862 47.41 69.733
2011 7169 10298 4491 8529 1315 25.935 55.604 76.297 45.623 66.186
2012 6818 9904 4510 8331 1294 24.664 53.474 76.614 44.566 65.126
2013 5469 9472 5032 8097 1319 19.784 51.141 85.483 43.31 66.43