1964
5.04
3.79
2.93
2.77
4.11
6.33
50.4
53.8
46.2
20.4
11.3
7.56
1965
5.57
4.33
3.46
4.31
2.96
15.0
61.1
190
73.0
24.5
17.5
9.20
1966
6.89
5.18
3.54
2.98
3.18
7.79
46.2
147
83.5
23.1
13.0
7.55
1967
5.54
4.10
4.48
4.82
3.84
26.0
104
64.4
56.1
15.2
8.67
6.65
1968
6.26
4.49
3.67
2.78
3.48
13.3
59.8
104
27.6
30.5
13.0
7.91
1969
5.78
4.10
3.77
3.38
3.78
6.92
20.8
57.8
46.1
19.4
10.1
6.58
1970
5.12
4.02
10.8
10.9
4.60
11.7
42.1
8.42
10.1
10.7
7.97
7.31
1971
6.75
6.17
5.80
5.65
8.10
35.5
34.6
77.9
59.7
21.7
14.6
6.89
1972
5.30
4.44
3.38
2.79
2.70
6.74
65.5
22.9
28.2
13.5
9.22
7.25
1973
6.58
5.86
5.59
4.48
5.69
29.1
36.3
24.4
28.6
14.8
6.53
4.33
1974
3.62
3.19
3.03
3.45
3.97
14.5
49.2
71.6
102
28.7
11.6
7.52
1975
5.71
4.52
3.44
3.11
4.32
14.8
81.9
28.9
40.0
15.5
8.34
6.31
1976
5.09
4.42
3.55
3.91
6.26
21.1
73.0
50.0
49.9
17.4
9.65
6.54
1977
4.73
3.88
2.63
5.09
5.80
6.44
26.5
55.1
31.2
21.0
13.4
9.13
1978
7.44
6.34
6.19
7.28
8.51
24.7
78.9
59.4
38.0
23.0
12.4
7.85
1979
5.75
5.35
4.12
4.10
3.25
7.39
43.4
78.0
31.3
11.1
7.11
5.96
1980
4.79
4.24
4.01
3.41
6.07
7.62
12.8
17.1
30.5
16.5
10.6
7.74
1981
7.01
6.06
5.25
8.66
6.73
10.9
33.7
82.5
38.6
15.8
8.34
5.78
1982
4.61
4.27
3.66
3.06
3.76
6.43
22.2
24.0
38.0
16.0
8.61
5.63
1983
4.53
3.95
3.63
3.36
5.48
3.38
29.6
37.1
44.0
17.7
8.67
5.79
1984
4.68
3.30
2.99
3.20
3.55
7.35
19.9
22.8
73.5
21.6
9.83
6.70
1985
5.67
4.64
3.84
3.68
4.79
6.09
28.4
54.5
57.9
27.5
10.9
7.96
1986
6.50
5.95
4.95
4.97
6.53
14.5
33.5
92.8
97.0
17.0
6.91
5.12
1987
4.47
3.41
4.22
4.45
4.23
8.51
75.0
88.7
13.5
6.33
7.62
10.1
1988
8.88
7.46
7.60
7.50
9.51
9.08
12.6
21.9
22.7
10.6
9.53
8.24
1989
9.01
7.84
7.90
10.2
9.75
20.8
47.7
23.7
88.1
26.2
15.9
10.4
1990
6.57
5.27
5.00
3.87
8.94
26.1
85.0
65.2
76.8
46.2
9.26
6.31
1991
5.36
5.97
5.42
5.85
7.44
12.8
68.1
69.0
67.3
13.8
6.46
4.98
1992
4.37
4.29
4.97
5.81
7.09
7.93
54.8
69.2
53.0
29.0
11.2
9.81
1993
8.32
7.89
6.43
9.49
8.52
41.8
103
99.0
37.7
16.0
9.12
8.76
1994
9.65
8.00
5.02
14.3
11.4
38.5
62.7
170
302
19.7


1995



25.9
23.0
28.2
23.2
12.8
13.3
14.7
10.9
7.78







































