In another thread it was being discussed how inefficient the door-to-door preaching is, and I thought this raised an interesting question - what proportion of Jehovah's Witnesses will make a convert in their lifetime?
In my experience, I can think of two or three people that my parents have studied with and who were later baptized. But I know of so few baptisms that it is hard for me to think about it. I think the number must be quite small, at least less than a half.