Bestand
1970,1-2u-5-6; 1971,1-5; 1972,1-6; 1973,1-5; 1974,1-6; 1975,1-6; 1976,1-6; 1977,1-6; 1978,1-6; 1979,1-3u.5/6; 1980,1-6; 1982,1-6; 1983,2-4; 1986,1-4; 1988,1-6; 1989,1-6; 1990/91,1-4; 1992/1993,1/2.1994/1995,1-6.1996,5/6; 1998,3-6; 1999,5/6; 2000,1/2