Yes, most western countries have "enjoyed" the "blessings" of growth, but the rate has dropped to 1-3% PA in general. All the big gains were many years ago. This is despite the amount of preaching activity and publications that have been shifted each year. This is despite the number of children being born and raised as Witnesses. Look at the numbers baptised and think about how many must be leaving each year.
In the US this year they have skewed the figures by taking in a number of other territories that they did not include previously. Figures for pioneers have been massaged by making it far easier to be an auxillary and ramping up leaflet drop ampaigns to at least 3 per annum. Getting in a couple of hours babysitting a trolley means hours will go up, as will essentially random, pointless, unqualified literature placements. All this means is that the hours and placement figures increase but the conversion ratio drops.
Yes, technically growth has been there year on year but any corporation would be concerned about the trends. They do not represent healthy, sustainable, organic growth.
I don't think that anyone on here is seriously contemplating the imminent implosion of the WTS but even a basic analysis of WTS figures gives some pretty clear indications of the problems the WTS faces over the next couple of decades.