1964
35.4
27.9
28.4
49.8
52.5
187
426
446
344
174
84.8
49.7
1965
34.0
26.3
26.4
71.8
139
247
390
454
282
124
84.7
52.6
1966
39.0
35.5
35.2
55.3
105
203
402
520
298
124
67.1
41.1
1967
28.4
23.5
23.8
43.8
50.0
141
387
360
240
123
58.5
37.2
1968
29.0
24.2
35.6
51.7
89.6
230
426
345
255
127
62.3
42.2
1969
38.5
31.8
35.8
51.5
89.7
181
340
330
270
128
69.3
47.4
1970
35.1
29.8
31.7
64.4
92.4
192
364
370
272
176
101
73.8
1971
39.4
32.5
34.5
68.0
91.0
302
359
359
251
162
96.0
55.8
1972
37.6
28.2
46.8
55.9
132
184
336
395
265
161
114
74.3
1973
46.6
39.3
53.2
95.1
125
305
367
407
317
258
105
53.9
1974
39.5
32.5
31.8
58.5
75.6
175
361
450
283
170
92.9
53.3
1975
45.1
38.7
46.2
82.0
135
249
413
373
359
223
107
57.8
1976
37.3
32.2
35.9
57.3
120
219
345
400
275
153
94.8
51.9
1977
32.2
29.8
30.8
43.4
91.1
192
468
464
308
143
105
55.6
1978
39.1
33.3
40.7
76.7
162
262
408
442
301
204
95.8
57.1
1979
39.6
30.9
32.4
70.4
114
218
406
420
255
147
83.3
51.6
1980
33.1
28.5
38.0
63.8
114
234
483
473
336
157
89.1
59.4
1981
43.1
40.6
40.7
81.0
119
262
457
447
302
168
82.2
51.5
1982
37.9
35.5
49.9
96.7
122
267
385
380
311
132
76.4
49.8
1983
37.8
30.8
35.7
45.9
108
177
320
388
358
215
98.6
55.9
1984
40.8
32.7
39.2
50.5
120
248
415
358
379
193
71.7
44.9
1985
32.7
31.4
40.2
48.6
64.2
152
391
338
330
209
104
55.9
1986
39.3
31.3
33.7
56.7
66.1
247
407
346
295
140
78.9
47.3
1987
35.4
31.8
33.4
55.8
77.7
193
429
432
288
136
84.1
46.6
1988
32.1
27.4
30.5
63.7
115
203
453
484
279
125
67.8
48.4
1989
46.1
38.5
46.3
64.0
138
221
366
409
438
188
76.9
48.1
1990
36.8
30.9
34.5
63.9
112
260
470
425
344
152
76.4
46.7
1991
34.2
28.4
34.4
49.8
116
236
378
515
362
132
64.9
42.4
1992
31.8
26.5
33.2
50.4
69.7
154
291
483
308
131
68.1
42.4
1993
32.5
30.1
27.3
52.9
112
201
368
496
365
167
77.0
45.4
1994
32.2
27.9
35.3
38.0
88.3
244
384
419
300
110
58.1
39.7
1995
31.0
29.0
37.5
61.7
184
339
417
488
294
121
76.8
47.4







































