As far as I can remember.. it was slightly above 45.000...
...45.002 I think!!! Slightly more than in Madrid... http://www.queenzone.com/queenzone/forumnew/forum_topic_view.aspx?Q=641712
Berlin was sold out in 1986... no, not 45.000... there were only 44.398 people attending!!! :-)
Anyway, many happy take-off´s and always smooth landings... wherever you intend to go down! ;-)
Shoot for the moon... even if you fail you will land among the stars!