652
1968
5330
110
1969
2670
65.3
1970
7570
54.4
1971
6050
72.0
1972
3980
75.6
1973
3410
69.8
1974
5330
66.5
1975
3980
75.6
1976
2580
78.0
1977
2940
69.8
1978
4900
91.0
1979
3820
84.0
1980
2980
79.2
1981
2980
78.0
1982
2520
89.7
1983
2420
75.7
1984
7880
69.4
1985
1860
50.0
1986
2820
58.6
1987
4060
80.0
1988
5290
78.0
1989
5290
91.0
1990
2750
77.5
1991
2670
70.3
1992
2240
54.2
1993
3120
55.0
1994
2240
54.2
1995
3170
53.4
1996
4110
74.3
1997
5430
130
1998
5880
130
1999
7340
74.5
2000
4100
63.6
2001
5410
64.5
