Bestand
1964,16u.35-43; 1965,1-3u.10u.12u.14-22u.24-25u.29-32u.36; 1966,1u.3-7u.10u.14-15u.18u.20-23u.26-29u.31; 1967,7u.9u.12-14; 1973,29-31u.47u.51; 1974,8u.19u.37u.52; 1975,3u.21u.25u.34-35u.39u.51; 1976,3u.13u.32-33u.35; 1977,2u.9-10; 1978,11u.36u.39; 1979,7u.11u.16u.30u.34-36; 1980,8-9u.15u.36; 1981,2u.12u.16u.25u.27u.30; 1982,10u.17u.24u.26; 1983,4u.9u.14u.18u.22-24u.27-28u.31-33u.35-36u.38; 1984,5u.11-12u.15u.21-22u.24-25u.27; 1985,3-4; N.F. 1985,1u.3-7; 1986,1-8; 1987,1-2u.4-5; 1988, 1-9; 1989,1u.3-12; 1990,1-7; 1991,1-4; 1992,1-3u.6; 1993,1; 1994,2/3-4u.7-11; 1995,1-10; 1996,1-14; 1997,1-2u.4-12; 1998,1-6u.8-9u.11; 1999,5u.8-9u.11u.13u.15-16u.18u.21u.25-30; 2000,2-3u.5/6-7u.10-12; 2002,1 - 2003,3