year
|
NOx
|
NMVOC
|
SOx
|
NH3
|
PM2.5
|
PM10
|
TSPs
|
CO
|
1990
|
100
|
100
|
100
|
100
|
|
|
100
|
100
|
1991
|
97
|
95
|
91
|
95
|
|
|
88
|
97
|
1992
|
95
|
91
|
84
|
90
|
|
|
81
|
91
|
1993
|
91
|
88
|
79
|
86
|
|
|
75
|
91
|
1994
|
87
|
81
|
73
|
84
|
|
|
70
|
81
|
1995
|
85
|
78
|
65
|
82
|
|
|
64
|
75
|
1996
|
83
|
77
|
60
|
82
|
|
|
63
|
73
|
1997
|
80
|
74
|
56
|
82
|
|
|
60
|
70
|
1998
|
78
|
72
|
50
|
82
|
|
|
58
|
66
|
1999
|
75
|
68
|
43
|
82
|
|
|
56
|
62
|
2000
|
73
|
63
|
39
|
80
|
100
|
100
|
54
|
57
|
2001
|
72
|
61
|
37
|
79
|
100
|
100
|
55
|
55
|
2002
|
70
|
58
|
35
|
78
|
96
|
96
|
53
|
52
|
2003
|
70
|
56
|
34
|
78
|
96
|
95
|
52
|
50
|
2004
|
69
|
54
|
32
|
77
|
95
|
94
|
53
|
49
|
2005
|
67
|
52
|
30
|
76
|
92
|
92
|
52
|
45
|
2006
|
65
|
51
|
29
|
76
|
89
|
90
|
50
|
43
|
2007
|
63
|
49
|
28
|
76
|
87
|
89
|
50
|
41
|
2008
|
58
|
46
|
22
|
75
|
86
|
86
|
48
|
39
|
2009
|
53
|
43
|
18
|
74
|
82
|
82
|
46
|
36
|
2010
|
53
|
43
|
17
|
73
|
85
|
85
|
47
|
38
|
2011
|
51
|
41
|
17
|
73
|
81
|
82
|
46
|
35
|
2012
|
49
|
40
|
16
|
72
|
81
|
81
|
45
|
34
|