Year
|
Cadmium
|
Cd
|
Hg
|
Mercury
|
Lead
|
Pb
|
1990
|
100
|
|
|
100
|
100
|
|
1991
|
93.96
|
|
|
94.31
|
78.04
|
|
1992
|
89.38
|
|
|
87.66
|
64.37
|
|
1993
|
81.3
|
|
|
75.83
|
57.38
|
|
1994
|
79.22
|
|
|
72.74
|
52.04
|
|
1995
|
80.52
|
|
|
70.07
|
47.58
|
|
1996
|
76.48
|
|
|
66.12
|
41.51
|
|
1997
|
75.27
|
|
|
62.37
|
37.61
|
|
1998
|
69.09
|
|
|
58.88
|
34.24
|
|
1999
|
65.47
|
|
|
54.58
|
29.38
|
|
2000
|
62.81
|
|
|
51.89
|
20.4
|
|
2001
|
60.32
|
|
|
49.18
|
17.45
|
|
2002
|
57.23
|
|
|
47.61
|
14.17
|
|
2003
|
54.69
|
|
|
45.78
|
13.79
|
|
2004
|
53.62
|
|
|
45.05
|
13.3
|
|
2005
|
50.94
|
|
|
43.43
|
12.75
|
|
2006
|
48.91
|
|
|
42.92
|
12.64
|
|
2007
|
45.06
|
|
|
41.53
|
11.99
|
|
2008
|
43.89
|
|
|
39.71
|
11.86
|
|
2009
|
36.21
|
|
|
28.54
|
8.03
|
|
2010
|
38.01
|
|
|
28.82
|
8.8
|
|
2011
|
35.84
|
|
|
28.0
|
7.93
|
|
2012
|
34.7
|
|
|
26.92
|
7.87
|
|
2013
|
33.9
|
|
|
26.06
|
7.59
|
|
2014
|
34.08
|
|
|
25.54
|
7.7
|
|
2015
|
33.4
|
|
|
25.39
|
7.62
|
|
2016
|
35.44
|
|
|
28.5
|
7.13
|
|