Bestand
1980, 2/3; 1987,17-18; 1988,4; 1990, 7,23/24; 1991,7,16; 1992,20/21; 1993,13,19-21; 1994,5-6,22; 1995,9,11,14-16,20-24; 1996,4,9-11,14,17,22; 1997,1-4,6-8,20/21; 1998,4,7-8,12-12,19-21; 1999,2/3-24; 2000,14/15,19-24; 2001, 1-4,6,8/9,11/12,17; 2002,2/3-6,12-14,21;2003,4,14/15-17,23/24; 2004,1/2,11,17-20; 2005,3/4