The number would average 72 per year but in fairness a delusional anointed person lives longer than age 1. since an anointed person lives on average until say 60-65 remembering that health care has increased life spans only in the last 100-150 years and since JWism teaches only adults can be anointed the number should be 72 x 40 = 2280 who would be alive on average in any given year. (This is a very rough calculation)
I also doubt the Borg will allow this embarrassment to continue much longer. My prediction is that new light will cause the Borg to adjust the way numbers are to be counted.