77.2
1965
1610
42.5
1966
2450
30.8
1967
2720
59.0
1968
3400
71.0
1969
2970
63.0
1970
2970
49.4
1971
2100
24.6
1972
3090
29.8
1973
3340
47.5
1974
4020
37.7
1975
2010
29.0
1976
2010
38.0
1977
2450
39.2
1978
2730
46.6
1979
3170
33.8
1980
3250
47.8
1981
2920
34.0
1982
1500
37.6
1983
2470
35.2
1984
5040
29.2
1985
1300
35.6
1986
1970
56.4
1987
6760
56.4
1988
3410
54.4
1989
2160
64.0
1990
3740
56.8
1991
2810
54.4
1992
1650
46.5
1993
2040
53.7
1994
1760
32.8
1995
1890
33.6
1996
3330
77.2
1997
5960
66.6
1998
4260
40.0
