CEDARS: Well done, very interesting statistical analysis! Of course, as Sir82 correctly pointed out, "Correlation does not equal causation". Nevertheless, it is intriguingly suggestive ...
Ten cowboys were recently found dead. All of them died with their boots on. And so, apparently it was the boots that caused their deaths. Thus confirming the dangers of wearing cowboy boots. Authorities were however mystified by the meaning of the strange round, bloody holes which all of them had all over their bodies!
Let's be careful to not fall into the WT Practice of making the factual data fit our preconceived notions.
Probably another related issue is the overall education level of people in the various "lands". I would hazard a guess that the general population in countries with higher Internet Penetration tend to be better educated and also have a better standard of living. These are just two other factors that would tend work against JW's proselytizing efforts.
Thanks for sharing.