This is definitely a bit of wishful thinking, but...I could possibly foresee the numbers continuing to grow in the poorer countries, but I could also foresee numbers dropping drastically in the more "civilized" areas such as Britain, Canada, United States, Europe, etc., who have access to the internet, and other info.
I predict that the WTS numbers will drop in direct proportion to the growth of the internet.
The formula for sucess is:
Internet Growth = Watchtower Decline
-Integ.