TheOldHippie - Thanks!
Phizzy - My guess is that they're counting the increase of the year-over-year increase in average publishers. The explanation for the continued (reported) growth could be one or both of the following:
1. There's much more growth in 3rd world countries than we see in US/UK. It's possible (likely even) that the JW population in 1st world countries is declining, and the 3rd world countries are making up for it.
2. They've got two sets of books, and are fudging the numbers that they report to the R/F.
I think it's difficult to argue that the former isn't taking place, and the latter wouldn't surprise me one bit - it would just be a drop in the bucket of lies they've told.