Bestand
1958,1; 1960,4; 1964,1; 1965,1,11; 1966,1-5,10-12; 1967,1,3,4,6; 1968,9,11/12; 1969,1-4,6-8,10; 1970,1-5,7-10,12; 1971,2-6,10; 1972,2,5,6,12; 1973,1,2,4,9,11; 1974,2,4,6-11; 1975,1,3,4,6-8,10,11; 1976,1-5; 1982,7; 1983,11,12; 1984,8,9; 1985,1-6,10-12; 1986; 1987,1,4-12; 1988,3,5; 1989,2,3,6-12; 1990,1-4,7-9; 1992,4,8; 1993,6; 1994 - 2015