And then there are "replacements" of anointed fallen away (1935 was the cutoff date, no more anointed after that, then this when those after 1935 started partaking, and the the steading increase of those partaking on the memorial which starting about 2008, about 20,000 today)
W2008 1/15 p. 23
It seems, however, that not all who have been called to a heavenly hope since the 1930’s are replacements for ones who have fallen away. Jehovah has evidently made sure that we will have anointed Christians among us all through the final days of this system of things until the destruction of “Babylon the Great.”
WT1998 2/15 p.21
Suppose an anointed one became unfaithful. Would there be a replacement? Paul indicated as much in his discussion of the symbolic olive tree. (Romans 11:11-32) If a spirit-begotten one needs to be replaced, likely God would give the heavenly calling to someone whose faith had been exemplary in rendering sacred service to him for many years
WT1992 3/1 p. 20-21
What if some anointed ones fail to be integrity keepers? At this late hour, the number of such disloyal ones will no doubt be few. Reasonably, any replacement would come, not from among newly baptized ones, but from among those who have stuck with Jesus in his trials through many years of faithful service.
https://www.jwfacts.com/watchtower/statistics.php#L4