Bestand
1968,49; 1969,10; 1970,45-46,48-52; 1972,6,33-34,36-41,44-47,49-55; 1973,4-5,8,12,24-29,31-37,39-42,47-48,50; 1974,1-10,13-24,26a-33,34a-36,37a-40,42-57; 1975,1-3,6,52; 1976,1-2; 1978,35-40,45; 1980,39a, 1987,15,17,22,27,43; 1988,10-27,31,41; 1989,2a,16,24,35; 1990,3-4; 1992,2-3; 1993,1-52; 1996,1-12,14-18a,20-27,29-52a; 1997 - 2004; 2005,33; 2006,52; 2008,51; 2010; 2014,1-12,14-19,21-52