Bestand
4.1952; 8.1956 - 24.1972; 30.1978,11; 31.1979,4 - 62.2010; 64.2012 - 71.2019,2,4,8
Bestandslücken
[N=1952,3-24; 1956,1-9,11-15; 1957,2,12; 1959,7; 1965,18; 1970,1,15,20-21,23; 1971,19; 1972,9; 1980,1-4,6,8; 1981,1,5; 1988,1-2,11; 2008,3,7; 2010,7-10; 2018,3,9]