650
1964
134
2.77
1965
201
2.77
1966
236
2.15
1967
236
2.15
1968
356
3.46
1969
99.1
3.46
1970
323
3.18
1971
323
5.55
1972
189
5.34
1973
580
4.77
1974
556
5.14
1975
428
4.13
1976
1180
3.21
1977
201
3.65
1978
835
4.45
1979
166
3.33
1980
363
3.49
1981
950
3.65
1982
1890
3.97
1983
2060
3.81
1984
1090
3.81
1985
1200
3.81
1986
920
3.47
1987
920
3.47
1988
1120
3.47
1989
511
2.63
1990
665
7.26
1991
654
4.61
1992
2420
5.14
1993
2620
5.34
1994
2420
4.61
1995
164
3.81
1996
102
3.24
1997
102
2.68
