Bestand
3.1961,1-2; 4.1964,3,1-9; 5.1967/69,1u.3,1-4; 7.1972/73,1-2u.3,1-4; 8.1973,3,3-5; 9.1975,3,4; 10.1976,1-2u.3,1/3; 11.1977,1-2u.3,1-2; 12.1978,1-2u.3,1-3; 14.1980,1-2u.3,1-3; 15.1980,1-2u.3,1-2; 16.1981/82;1-2u.3,1-2; 17.1983,1,1-2u.2u.3,1-2; 18.1984,1,1-2u.2u.3,1-2; 19.1985,1-1-2u.2u.3,1-2u.4; 20.1986,1,1-3u.2u.3,1; 21.1987,1,1-3u.2; 22.1988,1,1-3u.2; 23.1989,1,1-3u.2u.2,Ind.; 24.1990,1,1-3u.2; 25.1991 - 32.1997