Yes I think as Slim and TruthBKnown have noted, I think that it would depend how you define a JW. In terms of people who believe to a lesser or greater extent, it’s the ‘truth’? I think there’s definitely 8 million.
If we’re talking how Watchtower defines a JW, attends most meetings and submits a FS report every month? I would say that number is less than they claim...at least in the North Western countries. However unfortunately I’d say many whom watchtower would term inactive still contribute financially.