Year
|
HCB
|
PCB
|
Dioxins and furans
|
PAH
|
1990
|
100.0
|
100.0
|
100.0
|
100.0
|
1991
|
95.33
|
96.2
|
94.99
|
96.0
|
1992
|
97.74
|
92.4
|
89.52
|
103.0
|
1993
|
92.71
|
89.5
|
83.44
|
101.8
|
1994
|
85.45
|
85.9
|
77.01
|
92.3
|
1995
|
88.75
|
72.4
|
70.42
|
103.2
|
1996
|
88.17
|
67.2
|
62.1
|
87.5
|
1997
|
88.64
|
64.1
|
55.38
|
75.9
|
1998
|
93.1
|
60.4
|
49.28
|
71.9
|
1999
|
14.15
|
56.4
|
41.91
|
66.5
|
2000
|
11.81
|
37.4
|
37.52
|
58.9
|
2001
|
10.41
|
35.1
|
31.07
|
57.6
|
2002
|
8.43
|
30.5
|
24.51
|
39.1
|
2003
|
8.55
|
28.5
|
20.97
|
40.1
|
2004
|
7.41
|
28.0
|
20.47
|
38.4
|
2005
|
7.39
|
29.5
|
18.54
|
39.4
|
2006
|
5.42
|
30.4
|
18.53
|
40.5
|
2007
|
5.49
|
30.2
|
18.02
|
39.8
|
2008
|
5.04
|
30.7
|
18.21
|
39.1
|
2009
|
4.12
|
26.9
|
16.15
|
37.4
|
2010
|
3.73
|
24.5
|
16.65
|
40.2
|
2011
|
4.14
|
27.0
|
16.08
|
39.2
|
2012
|
3.72
|
23.0
|
14.8
|
36.7
|
2013
|
3.55
|
24.3
|
15.44
|
38.0
|