In my own family. ten years ago, Myself, wife and seven children, 4 children baptised.
Now only wife and two daughters are JWs. Myself, one son, one daughter both DA'd, three children never became JWs all left home.
In these past years I have heard of those families, who back then you would have said were "spiritually strong", but now only one or two are still in.
I have heard of four guys who were Elders when I left, guys I grow up in "truth" with. JW brothers who had parts on assemblies and conventions, pioneers etc. Now they have all left , two did so over paedophile issue.
Every so often I will hear that "brother or sister X has stopped going to meetings etc.
Congregations that once had average Sunday meeting attendances of 130-150, are now down to 80-90, or for one congregation down to about 30-40.
In a Kingdom Hall built in the late 1980's to seat up to 300, ready for the "great increase", now they are lucky to get a quarter of that.
I recall an Elder, who was at a childrens party my wife and I held, saying about the children, "If we don't keep this young ones, the organisation is finished." Then was getting on for 20 years ago now. I thought what an odd thing to say. Yet when I think about the children who were at that party, I would say only a quarter or less, of them are JWs.
What did one survey say about JWs, something like that only about a third of those brought up as JWs, become JWs.