290
1967
2200
4.04
1968
1880
5.44
1969
5700
8.01
1970
3200
4.40
1971
752
10.6
1972
1780
5.10
1973
1430
7.64
1974
1620
6.85
1975
1620
6.85
1976
1620
6.85
1977
1470
5.90
1978
5080
5.90
1979
2120
5.32
1980
2220
9.75
1981
5700
6.08
1982
5280
9.00
1983
2960
7.00
1984
3540
3.40
1985
3620
12.0
1986
1110
3.60
1987
816
6.60







































