1986
1987
1988
1989
1990
1991
1992
1993
1994
18
24
30
36
42
48
54
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Chart table
x
Series 0
Series 1
Series 2
1986
41
36
31
1987
37
34
29
1988
48
47
40
1989
41
39
33
1990
39
36
31
1991
34
31
27
1992
38
35
30
1993
29
28
24
1994
33
32
27
a