Bestand
23.1990,3-4; 24.1991,1; 25.1992 - 26.1993; 28.1995,4; 30.1996 - 32.1999; 33.2000,1-3; 34.2001; 35.2002,4; 36.2003,1-4; 37.2004,1-4; 38.2005,2-4; 39.2006,1-4; 40.2007,1-4; 41.2008,1-2u.4; 42.2009,1-4; 43.2010,1-4; 44.2011,1-4; 45.2012,1-4; 46.2013,1-4; 47.2014,1-4; 48.2015,1-4; 49.2016,1-4; 50.2017,1-4; 51.2018,1-4; 52.2019,1-4; 53.2020,1-4; 54.2021,1-4; 55.2022,1; 56.2023,2-3