1967
13.7
10.8
7.90
6
5.39
13
203
103
162
48.1
21.6
18.1
1968
17.7
12.8
8.21
7.2
6.11
64.2
119
221
157
62.7
24.4
17.4
1969
15
11.9
9.77
8.64
12.8
21.1
92.5
577
157
60.9
26.7
11.9
1970
10.4
9.62
7.45
5.16
5.43
68.9
392
175
139
116
33.8
23.5
1971
18.6
15.1
18.2
37
63.8
106
139
266
181
106
53.6
29.9
1972
21.9
25.2
14.5
12.3
7.95
23.3
127
91.9
454
75.7
32.8
21.1
1973
32.6
22.8
17.5
9.19
11.2
164
238
245
250
192
40.3
24.1
1974
18.3
14.9
11.6
9.72
8.64
39.3
148
272
98.7
39.2
27.7
17.8
1975
14.7
13.25
11.1
7.88
10.63
39.4
148
262
111
47.6
26.5
18.35
1976
11.1
11.6
10.61
6.05
12.62
39.5
148
363
117
51.8
25.9
18.62
1977
13.7
11.6
8.02
7.36
16.2
39.8
287
465
124
56
25.3
18.9
1978
16.3
19
13.2
8.67
9.04
123
678
356
241
108
54.6
23.2
1979
17.8
17.5
11.2
6.71
31.2
20.1
341
222
138
36.8
17.7
23.7
1980
20.2
13.7
12.1
10.1
12
35.6
88.9
127
362
56.6
28.3
17
1981
13.7
11.8
9.53
9.97
14.7
77.2
211
332
397
91.5
51.4
26
1982
21.2
21.1
33.2
12.1
17.7
35
45.8
155
211
45.5
30.5
19.7
1983
16.9
14
9.43
8.78
14.3
11.2
57.4
101
314
207
35.2
20.2
1984
21.3
10.7
6.28
4.44
5.17
60.1
621
236
491
42.9
29.7
24.4
1985
19
15.3
13.8
12.7
19.6
70.2
186
418
270
156
34.1
23.7
1986
11.2
9.53
6.20
5.19
10.4
39.4
121
290
88.6
57.2
24.5
22.6
1987
14.4
12.6
10.6
9.52
22.1
8.63
163
191
198
47.1
28.7
19.9






















































































































































































