465
1964
255
1.80
1965
720
2.08
1966
1100
2.02
1967
780
2.40
1968
462
1.56
1969
226
2.20
1970
1450
2.87
1971
1050
2.75
1972
393
2.46
1973
256
3.80
1974
850
2.68
1975
985
2.66
1976
310
3.20
1977
255
2.36
1978
510
4.70
1979
1030
2.78
1980
87.0
3.05
1981
480
3.48
1982
610
2.52
1983
280
1.60
1984
1440
2.80
1985
450
3.56
1986
730
4.40
1987
410
3.00
1988
270
5.40
1989
530
6.00
1990
402
3.00
1991
310
4.20
1992
210
3.80
1993
1730
5.00
1994
544
2.70
1995
1080
2.70
1996
94.9
4.60
1997
83.2
0.800
