Bestand
1.1998; 2.1999,1-3; 3.2000, 1-3; 4.2001,1,3,4; 5.2002,1-3; 6.2003,1-3; 7.2004,1-3; 9.2006,1-2/2; 10.2007,1-2/3; 12.2009,1-3; 13.2010,1-3; 11.2008,1-2/3; 14.2011,1/2-3; 15.2012,1-3; 16.2013,1-4; 17.2014,1-4; 18.2015,1-3; 19.2016,2,4; 20.2017,1-4; 21.2018,1-2; 22.2019,1; 23.2020,2,4 -