660
1964
325
8.60
1965
325
8.60
1966
416
8.90
1967
238
9.60
1968
315
10.6
1969
264
11.5
1970
520
11.6
1971
385
12.4
1972
362
10.8
1973
341
12.0
1974
860
11.4
1975
434
9.60
1976
377
6.90
1977
346
7.20
1978
405
9.00
1979
372
7.50
1980
458
9.90
1981
458
7.50
1982
305
8.40
1983
372
8.70
1984
587
8.10
1985
346
8.10
1986
332
8.70
1987
332
5.58
1988
372
5.58
1989
428
5.58
1990
250
5.58
1991
428
9.30
1992
428
9.30
1993
428
10.5
1994
362
10.5
1995
399
9.60
1996
330
9.60
1997
330
9.60
