Anon, did you see the stats on priesthood in Pennsylvania? I'm not sure what the turnover rate among priests is, but 300 over a few decades would seem to represent a much higher percentage than just 1%.
Personnel
Number of Retired Cardinals: 1
Number of Archbishops: 1
Number of Residential Bishops: 6
Number of Auxiliary Bishops: 5
Number of Retired Bishops: 10
Number of Abbots: 2
Priests Active Within Their Diocese: 1,091
Priests Active Outside of Their Diocese: 52
Retired, Sick or Absent priests: 590
Number of Diocesan Priests: 1,733
Religious Priests in Diocese: 776
Total Priests in Diocese: 2,509
Extern Priests in Diocese: 97
Ordinations of Diocesan Priests: 19
Ordinations of Religious Priests: 5
Ordinations of Transitional Deacons: 17
Ordinations of Permanent Deacons: 1
Permanent Deacons: 800
Brothers: 167
Sisters: 4,744
https:// www.pacatholic.org/resources/pa-catholic-statistics/