The ratio between JW`s and the population is getting wider , and wider with every year .
The hours spent door knocking to gain one convert is ever increasing with each year.
Over-all the yearly % increase is down to what it was some years ago.
branches are closing down , world wide.
Lay-offs with CO`s ,DO`s because their past their use-by date.
Reducing the size of the mags , Watchtower & Awake to cut costs.
Reduced revenue because of free mags being distributed .
An ageing population of JW`s and an increasing number of youths leaving the religion .
And of course the more cultish behaviour of some members of the G.B. in recent years with outlandish statements at International Conventions.
I would say all of the above ,pluss anything more you can think of , answers the OP questions .