Jahr
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1955
2
1956
2
1957
2
1958
2
1959
2
1960
2
1961
2
1962
2
1963
2
1964
2
1965
2
1966
2
1967
2
1968
2
1969
2
1970
2
1971
3
1972
5
1973
6
1974
6
1975
7
1976
7
1977
7
1978
8
1979
10
1980
12
1981
12
1982
13
1983
13
1984
13
1985
14
1986
18
1987
19
1988
22
1989
27
1990
52
1991
86
1992
139
1993
243
1994
403
1995
1996
384
1997
208
1998
138
1999
78
2000
36
2001
16
2002
12
2003
9
2004
8
mehr ...