| SO2
emission, tonnes |
Building fires |
Vehicle fires |
Total |
| 1990 | 819 | 14 | 833 |
| 1991 | 846 | 14 | 860 |
| 1992 | 920 | 14 | 934 |
| 1993 | 808 | 15 | 823 |
| 1994 | 814 | 16 | 829 |
| 1995 | 940 | 16 | 956 |
| 1996 | 950 | 17 | 967 |
| 1997 | 877 | 17 | 894 |
| 1998 | 785 | 18 | 802 |
| 1999 | 843 | 18 | 862 |
| 2000 | 826 | 18 | 844 |
| 2001 | 812 | 18 | 831 |
| 2002 | 787 | 18 | 805 |
| 2003 | 887 | 18 | 905 |
| 2004 | 766 | 18 | 784 |
| 2005 | 796 | 19 | 815 |
| 2006 | 843 | 20 | 862 |
| 2007 | 936 | 17 | 953 |
| 2008 | 922 | 22 | 944 |
| 2009 | 931 | 21 | 952 |