Bestand
17.1952/53; 25.1960/61,4; 27.1962/63,2-3; 28.1963/64,3-4; 31.1966/67,1; 32.1967/68,3; 33.1968/69,1; 34.1969/70,3; 39.1975,1,4; 40.1976,1; 41.1977,1-2,4; 42.1978,1,3-4; 44.1980,3-4; 46.1982,1-2,4; 47.1983,3-4; 48.1984,2-3; 49.1985,1-2; 50.1986,2-4; 51.1987,1; 52.1988,4; 53.1989,1-2; 56.1992,1