99 And We also know your hardships, your sorrows. You grieve that so many of your children are lost, pathetically duped by falsehood; you are confronted by a lack of material means, which sometimes makes impossible a wider spread of Catholicism in your dioceses; and the number of priests at your disposal is in many places inadequate to the mounting demands for their services.
Source: Ad Petri Cathedram (Vatican.va)