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
13
1981
13
1982
14
1983
14
1984
14
1985
15
1986
19
1987
20
1988
23
1989
28
1990
52
1991
86
1992
141
1993
246
1994
1995
1996
387
1997
1998
143
1999
81
2000
37
2001
17
2002
13
2003
10
2004
9
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