The MfS infiltrated almost every aspect of GDR life. In the mid-1980s, a network of IMs began growing in both German states; by the time East Germany collapsed in 1989, the MfS employed 91,015 employees and 173,081 informants.[22] About one of every 63 East Germans collaborated with the MfS – one of the most extensive police infiltrations of a society in history. In 2007 an article in BBC stated that "Some calculations have concluded that in East Germany there was one informer to every seven citizens."[23] Additionally, MfS agents infiltrated and undermined West Germany's government and spy agencies.