When was darmstadtium discovered?

Darmstadtium was for the first time obtained by Sigurd Hofmann, Victor Ninov, Fritz Peter Hessberger, Peter Armbruster, H. Folger, Gottfried Münzenberg, H.J. Schött, Andrei Gheorghievici Popeko, Alexandr Vladimirovici Eremin, A.N. Andreev, S. Saro, Rudolf Janik, Matti Leino at Gesellschaft für Schwerionenforschung, near Darmstadt (Germany) in 1994.