1969
7.94
5.48
5.14
4.86
5.53
15.5
63.9
105
85.1
37.1
21.4
13.5
1970
10.0
8.25
7.29
6.20
7.49
33.2
112
152
73.9
39.9
23.0
14.3
1971
10.4
8.07
7.29
11.4
14.0
84.9
108
131
72.4
49.0
24.8
14.5
1972
10.9
9.77
8.24
7.36
6.74
18.0
99.7
115
101
34.9
23.6
14.0
1973
9.91
7.21
8.31
5.99
12.0
75.6
84.4
119
117
56.5
24.2
12.8
1974
9.19
6.06
4.64
4.82
6.34
21.6
83.6
142
113
44.0
21.2
13.1
1975
9.67
7.95
4.40
4.48
5.17
26.0
95.0
92.4
146
57.0
26.3
16.7
1976 
13.6
11.3
7.33
8.50
19.5
47.4
76.1
106
93.1
39.3
20.5
12.1
1977
8.72
6.70
4.76
8.11
10.1
21.7
102
151
75.2
41.4
23.6
14.9
1978
10.9
8.13
7.76
8.42
16.6
66.4
165
189
89.5
55.1
23.6
13.1
1979
8.55
7.35
4.06
4.67
3.93
19.1
99.8
161
86.7
37.2
21.3
14.9
1980
7.97
4.60
3.33
1.99
4.19
50.0
148
185
88.3
39.3
21.8
13.7
1981
10.7
8.07
5.45
9.25
11.9
28.9
114
143
84.9
31.0
21.3
13.7
1982
10.3
9.72
7.33
7.27
6.06
22.7
86.0
99.6
64.5
22.9
15.7
9.91
1983
7.13
5.25
4.43
4.97
9.13
11.1
94.5
124
148
78.8
33.4
17.6
1984
10.5
4.97
1.78
2.80
11.1
40.0
137
115
109
30.3
17.6
11.4
1985
8.44
6.32
3.82
3.66
5.52
22.9
116
165
155
62.6
25.9
13.1
1986
8.60
5.67
3.30
4.59
6.56
43.5
107
93.2
95.3
43.4
18.1
11.5
1987
6.93
5.76
4.37
4.30
4.71
13.7
90.0
115
93.0
41.3
26.6
14.9
1988
8.26
5.85
6.69
4.06
11.2
48.2
138
161
82.3
28.8
16.8
11.3
1989
11.2
6.48
4.91
3.84
12.0
39.5
87.9
167
85.3
43.3
21.1
12.7
1990
8.01
8.53
7.67
7.08
12.6
50.0
108
118
88.9
47.7
22.4
13.6
1991
10.7
7.16
6.10
6.50
10.9
30.3
68.2
125
88.9
27.8
15.2
9.68
1992
8.55
6.62
2.95
2.04
5.95
19.0
61.3
113
88.6
47.3
21.7
13.8
1993
9.76
8.00
4.76
7.28
13.2
29.7
70.3
106
61.1
29.4
15.1
8.70
1994
7.06
5.70
4.77
3.40
6.55
23.1
59.9
102
91.6
28.5
16.3
11.0
1995


5.35
4.60



118
69.3
41.9
24.3
12.6








































































































