1964
5.66
3.91
3.07
3.24
3.85
11.6
47.5
78.8
159
52.7
12.2
6.58
1965
4.21
3.37
3.35
4.36
2.94
33.7
94.8
129
79.4
42.2
17.2
7.69
1966
5.79
4.85
4.32
3.74
2.92
8.35
134
90.4
83.6
50.1
29.5
16.3
1967
6.02
4.18
4.06
5.09
6.48
10.3
69.5
64.6
41.0
16.7
9.48
7.75
1968
5.96
4.67
4.67
4.85
4.88
21.1
54.3
53.7
40.4
33.0
12.2
7.57
1969
5.75
4.47
4.49
3.89
4.71
9.20
41.3
64.6
53.1
22.5
9.87
6.44
1970
4.86
4.44
3.72
3.43
3.49
17.7
65.1
75.8
44.5
26.0
10.9
6.68
1971
4.96
3.99
3.76
6.23
9.13
56.1
70.3
73.8
53.3
34.8
16.2
8.04
1972
5.45
4.83
3.85
3.71
4.69
14.4
64.4
59.1
50.7
21.2
11.8
6.70
1973
6.12
5.19
5.12
4.45
6.94
41.7
47.1
71.8
58.7
46.3
16.8
8.53
1974
6.11
4.55
3.70
4.29
4.87
15.6
77.1
79.9
49.0
22.2
11.8
8.26
1975
6.48
5.96
4.97
4.62
5.14
623.2
68.0
52.3
73.1
25.3
10.6
5.98
1976
4.24
3.60
2.64
2.82
5.34
35.7
50.8
76.3
47.0
17.0
8.85
5.75
1977
4.56
3.72
3.37
5.16
10.4
11.9
51.0
84.1
42.7
19.8
12.3
7.86
1978
6.08
5.10
5.33
5.54
8.53
19.9
61.3
71.9
44.6
22.3
10.8
7.06
1979
4.90
4.42
3.30
3.61
5.33
9.03
51.2
73.3
44.0
22.2
12.7
8.92
1980
6.64
5.61
6.14
5.16
5.67
15.2
57.8
64.0
47.2
20.1
10.4
7.87
1981
6.46
5.46
4.27
5.78
6.73
11.5
45.0
59.0
35.6
16.1
9.26
5.64
1982
4.20
4.28
5.42
5.55
5.63
11.7
56.2
55.5
46.6
18.7
9.68
7.15
1983
5.85
4.95
4.55
4.64
8.16
8.16
31.9
55.3
58.0
28.1
12.4
7.38
1984
5.43
4.08
3.24
3.11
4.93
17.4
70.6
54.5
64.6
20.8
12.0
7.76
1985
5.71
4.66
3.88
3.95
5.11
11.3
58.6
49.0
46.2
28.8
13.4
8.95
1986
6.21
4.50
4.34
5.06
5.33
17.1
53.2
65.9
69.7
30.7
14.4
9.71
1987
7.24
5.86
6.07
6.79
7.53
17.6
103
84.3
60.1
18.8
11.5
7.66
1988
5.29
3.93
3.78
3.39
5.16
18.1
72.8
113
52.4
17.3
10.3
7.94
1989
7.34
5.75
5.11
4.76
10.2
26.5
65.5
91.2
53.0
23.0
12.1
8.32
1990
6.27
5.71
6.18
6.79
10.2
25.6
61.6
63.1
53.8
22.1
11.5
7.43
1991
6.11
4.73
4.53
4.87
5.82
15.3
36.5
66.6
59.7
18.1
9.55
6.53
1992
5.16
4.57
3.50
2.75
4.25
10.5
25.0
67.8
46.3
21.4
11.2
7.41
1993
5.56
4.51
4.19
4.27
5.56
10.7
41.9
92.3
58.9
25.5
12.4
7.13
1994
5.76
4.32
3.98
5.78
6.24
22.8
49.1
73.8
53.8
23.4
13.2
7.13
1995
5.66
4.68
4.56
4.12
10.3
62.4
93.2
84.3
54.4
22.8
13.5
7.99







































