http://www.censusscope.org/us/chart_age.html
This shows U.S. population by age. Of course, a lot of approximation would have to be done, as under 18 could be about 26%, most being already counted as publishers, and some baptized already. Could 20% of their publishers be their children?, at approximately 230,000? How many of these are counted as Bible Studies by their parents, plus any additional Bible Studies counted by the parents of those under 5 yrs old, that are not counted as "publishers" as of yet?
Just wondering, could an average U.S. Cong. having 85 publishers, have 17? kids (6-17)? Could there be about 6 (5 and under) kids? Seems possible.
Just a lot of questions, I know. But, the baptisms seem to be their young kids and shows to be the more dominant part of their growth.