1963
7.86
6.77
5.62
5.10
6.07
21.4
65.6
91.8
70.8
33.1
16.3
9..58
1964
7.61
6.43
5.29
4.97
5.64
11.2
74.4
55.5
69.1
44.5
13.4
8.06
1965
7.16
6.63
6.74
4.45
3.82
17.5
84.3
171
73.4
28.9
20.6
10.9
1966
8.27
6.88
5.91
5.09
6.83
11.9
51.8
158
92.6
20.3
12.5
9.42
1967
7.55
6.28
6.70
6.72
6.32
14.4
93.7
74.3
72.0
21.1
10.0
6.69
1968
5.77
4.56
3.90
3.25
3.59
33.4
89.4
136
44.9
42.2
19.1
12.3
1969
10.2
7.68
6.91
6.11
7.29
13.9
44.8
81.5
64.3
28.0
14.8
10.3
1970
7.99
6.98
5.34
5.04
4.76
22.4
132
95.5
68.1
44.7
18.2
11.1
1971
7.33
5.62
4.66
7.86
22.2
90.3
67.9
89.9
59.3
34.7
17.1
11.4
1972
8.69
7.93
6.47
4.88
5.11
16.1
67.0
63.8
61.5
29.6
15.8
10.3
1973
8.61
6.69
5.80
3.13
6.25
43.7
45.3
64.4
77.5
55.3
24.5
15.1
1974
11.7
8.81
7.15
6.40
7.49
8.65
14.4
48.0
63.0
45.5
29.9
20.6
1975
9.81
7.94
5.92
5.48
6.76
18.1
110
54.5
45.4
23.6
12.6
9.37
1976
8.01
6.69
5.80
3.13
6.25
43.7
45.3
64.4
77.5
55.3
24.5
15.1
1977
7.38
6.18
4.87
7.49
8.65
14.4
48.0
63.0
45.5
29.9
20.6
13.0
1978
9.92
8.08
7.45
14.5
12.2
48.5
61.9
73.7
47.95
27.45
15.45
11.3
1979
8.08
8.10
5.86
5.25
4.56
11.8
76.5
81.3
35.7
25.2
14.4
11.1
1980
8.38
7.23
6.29
4.70
6.88
24.3
47.3
66.1
60.2
29.7
16.5
11.5
1981
9.57
6.98
5.55
6.72
9.67
14.8
61.9
82.9
74.0
40.9
19.5
13.3
1982
10.7
9.34
9.76
11.8
9.315
14
40.8
59.5
88.7
30.7
16.7
12.5
1983
11.5
10.4
9.25
9.09
11.6
10.8
47.2
46.0
46.2
17.7
10.6
9..34
1984
8.88
8.08
7.20
6.82
7.03
17.2
34.4
35.8
80.3
18.2
12.6
9.66
1985
8.66
7.81
6.73
6.98
8.75
16.4
44.9
42.4
72.3
30.7
14.8
11.0
1986
9.20
8.68
7.85
7.25
7.60
15.7
40.7
67.2
65.6
20.8
12.6
10.3
1987
    10.4
8.07
7.11
7.28
6.98
8.16
46.1
79.2
65.3
38.6
17.7
11.2
1988
8.27
6.10
5.96
5.96
9.67
26.1
45.4
74.1
74.5
25.2
14.5
14.0
1989
13.6
10.8
7.47
9.13
8.20
20.5
90.1
64.3
130
43.5
17.2
13.3
1990
12.0
13.0
9.46
7.68
8.185
83.6
130
67.9
49.4
16.0
12.0

1991
12.6
10.4
8.99
7.69
7.79
15.5
38.9
43.2
57.2
18.1
13.9
12.1
1992
11.8
10.6
8.66
7.67
8.58
13.4
27.2
38.4
31.7
16.5
10.3
8.09
1993
7.45
7.10
6.61
7.27
6.93
9.73
44.5
43.6
34.9
21.2
30.0
8.50
1994
12.6
8.14
5.27
5.82
4.60
18.6
15.9
33.1
31.7
14.7
12.3
11.3
1995
10.3
9.60
6.44
6.19
10.1
23.8
19.4
49.0
47.2
25.6
18.0
11.6


























