Thanks for all the hard work ! I agree that analysing statistics is notoriously difficult, hence the old saw "There are lies, damned lies and statistics", the main danger being that they are used selectively , even if unconsciously, to prove a point.
But , by the graphs and figures you have made it plain, and thanks again, that the WT has a problem, whatever "increase" they crow about , underneath is an outflow , a hole in the bucket, that consists of people they would be much better off retaining if only they could.
The main growth being in the poor areas means eventually a cash flow problem that may not be solved by the property money making arm of the (religion) business. It takes time to turn over property, expenses are on a daily basis.