Bestand
1975,1-36,38-51; 1976,1-52; 1977,1,3-45,47-51; 1978,1-43,45,47-51; 1979,1-31,34-49,51; 1980,1-15,17-18,21-47,49-51; 1981,1-51; 1982,1-12,14-51; 1985,25; 1989,13+48; 1990,30-33,51; 1991,8-9,14,21-22,24+27+38+43; 1992,9+14+23+24+31+32+34+37+39+42+44+48+50+51; 1993,12+13,17-28,30-36,38-43,45+47+48; 1994,1+2,6-8,13-17,20-25,31-36,38-42,45+47+50+52; 1995,1-7,10+18,20-38,40-43, 48,51+52; 1996,1+2,4+7+9+10+17+19+20+24+28+29+36+45; 1997,25+26+28,30-32,36,46-50; 1998,1+4,8-10,12+13+15+16+33+36+40+41+45; 1999,22+25+28+29,38-41,46-48; 2000,3+8+16+18+21+22+24+25+27+30+31; 2001,13+14,31-34,37,39-41,43-48,50+52; 2002,1-3,9-11,15+16,18-23