Mechta,
I cannot give you figures, but many years ago I was an Instructor.Tech rep, etc for Shorts and I went to the design people with a similar question.
My question was relating to de-icing the fuselage as well as the wing, and the response was that the fuselage does not produce lift but it has little drag!!
That is the sort of reply to be expected from the Irish I guess but, from that I deduce that there is indeed lift that overcomes most of the drag.
Hope this helps?
Speedbird48