@slimboyfat
I notice two of the countries contributing the most to JW growth, Brazil and Angola, are Portuguese speaking. I wonder if there is a shortage of online and print material exposing JW history and practices in Portuguese? If so I wonder if this might be a gap to fill. If JW growth in those two countries halted there'd be little or no growth left overall.
If you notice Portugal have another "zero growth". In Portugal the apostate community collaborates with a major tv channel on a prime time documentary which exposes the organization (it was the most viewed documentary of the the year).
the explanation for the Brazil and Angola is simple... unfortunately they aren't a fully developed country where to be part of a cultish religion is highly stigmatized. On a recent political development on Brazil we saw the rise of a group of evangelicals politicians on the Brazilian government. Angola is very poor country with a lot of uneducated people with a strong Christian presence, so it's a "easy" territory for the org. You can fill up a Kingdom Hall with a bunch of kids only with the curiosity to saw some org lame video production.