In my micro-climate 40% of the congregation's do less than 5 hours per month immune to any "encouragement" or "guilt trips". I hear that about 10% of are persistently "irregular". About 10% of the publishers "listen in on the phone" and do about an hour or less - put in by the secretary.
We have about five ex elders sat in the audience and I guess half of those are in the 5 hour/ low answering group. The older zealous "1975" generation elders are dying or limited by age.
In the past three years we have had two older ones go inactive, one older one disassociate (apostasy) and five teenagers "not progress to baptism" and leave or become memorial attenders only. I only recall one teenager baptised.
The "zealous pioneer ones" and the "important elders wives" spend a huge mount of time on a nearby city's trolley carts wasting their efforts. This leaves the 40% to do the door to door work which also produces zero.
The only new people we see are weirdos who don't work or who don't wash and the occasional semi-apostate who turns up for a public talk every two months and disappears!
Oh and loads of depression and meds among all age groups. Jehovah's happy people don'cha know!