Sulfur Dioxide |
| Thousands of tons |
| 1974 |
79.4 |
| 1975 |
99.7 |
| 1976 |
106.6 |
| 1977 |
111.4 |
| 1978 |
103.2 |
| 1979 |
75.6 |
| 1980 |
74.0 |
| 1981 |
74.6 |
| 1982 |
44.9 |
| 1983 |
68.6 |
| 1984 |
60.9 |
| 1985 |
65.7 |
| 1986 |
62.1 |
| 1987 |
73.7 |
| 1988 |
62.8 |
| 1989 |
52.6 |
| 1990 |
59.7 |
| 1991 |
53.8 |
| 1992 |
57.6 |
| 1993 |
80.2 |
| 1994 |
79.3 |
| 1995 |
48.3 |
| 1996 |
20.3 |
| 1997 |
21.3 |
| 1998 |
20.2 |
| 1999 |
13.7 |
| 2000 |
18.8 |
| 2001 |
15.5 |
| 2002 |
18.7 |
| 2003 |
18.8 |
| 2004 |
23.5 |
| 2005 |
23.9 |
| 2006 |
17.4 |
| 2007 |
13.2 |
|
Nitrogen Oxides |
| Thousands of tons |
| 1974 |
26.1 |
| 1975 |
31.0 |
| 1976 |
35.9 |
| 1977 |
32.4 |
| 1978 |
31.6 |
| 1979 |
30.6 |
| 1980 |
32.9 |
| 1981 |
33.8 |
| 1982 |
21.4 |
| 1983 |
31.6 |
| 1984 |
28.1 |
| 1985 |
30.1 |
| 1986 |
27.1 |
| 1987 |
33.4 |
| 1988 |
27.5 |
| 1989 |
25.1 |
| 1990 |
29.6 |
| 1991 |
28.1 |
| 1992 |
28.4 |
| 1993 |
40.3 |
| 1994 |
42.3 |
| 1995 |
37.5 |
| 1996 |
28.1 |
| 1997 |
28.5 |
| 1998 |
26.4 |
| 1999 |
15.9 |
| 2000 |
18.7 |
| 2001 |
18.5 |
| 2002 |
14.4 |
| 2003 |
11.5 |
| 2004 |
11.3 |
| 2005 |
12.5 |
| 2006 |
13.3 |
| 2007 |
12.6 |
|
Carbon Dioxide |
| Millions of tons |
| 1996 |
4.9 |
| 1997 |
4.8 |
| 1998 |
4.8 |
| 1999 |
4.4 |
| 2000 |
5.1 |
| 2001 |
4.9 |
| 2002 |
5.4 |
| 2003 |
5.4 |
| 2004 |
5.0 |
| 2005 |
5.3 |
| 2006 |
5.7 |
| 2007 |
5.5 |
|