They don't have average priest age--if they showed that, you would see that the Crisis in the Church is going to get much worse in 10 or 20 years. Imagine the average parish being led by a permanent deacon instead of a priest. Imagine the further heresies that might erupt.
Imagine a "
permanent deacon"? 
Hah!  At least such a deacon is a more-or-less ordained
Even worse has
already happened in the good ole U.S.A.: Consider
parishes,
circa the turn of the 21st Century, in places like the
Novus Ordo Diocese of
Rochester- (N.Y.), where nuns or laywomen are assigned to lead some parishes, bearing titles like "parochial administrator". The situation arguably reduces the more scarce N.O. "priests" to mere dispensers of sacraments to multiple parishes, reporting not so much to their N.O. "bishop", but to women intermediaries who are their de facto bosses. I assume that stimulates self-centered feminist nuns to nag "Why can't I be ordained as a priest(ess)?  As parochial administrator, I'm already doing the same job!".
But one's imagination need not be stifled, e.g.: What might the prospect of being subservient to feminist nuns or laywomen--instead of a "bishop"--as a boss do to priestly vocations?  And how many altar boys could be recruited to serve priests who'd accept that subservience to women?
Having taken the time to write the above, I'm unsure how widely the decay of the priestly office (faculty?) of pastor into the lay office of "parochial administrator" has spread. I doubt that well known commentators, notably authoress Randy Engle, haven't already analyzed & worried about them.
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Note #: Depending upon one's view of Pope Paul VI's New Ordinal (mandatory effective on Easter 1969) and the validity of resulting orders. Traditionally, the vow of chastity begins with the order of subdeacon.
Note *: Where there is--or was--a local lay blog reporting & analyzing the modernism & mismanagement of that diocese by a recent past N.O. "bishop". Creation of the blog might've coïncided with a wreckification of their cathedral. I don't recall specifics, nor do I recall whether that blog was 1 that I found via CathInfo.