Values or family situation may be involved, as well as the consideration that one does not need to accumulate more years of service.
The other factor concerns scientists. You referred to the need for rigorous planning. All positions are important; I don't mean that entry positions are less important than scientific positions. However, the fact is that the hiring of a museum curator, whether it be a man or a woman, calls for a special profile.
As a result of government decisions, 15,000 positions were abolished between 1990 and 1996. An institutional or corporate memory was lost. We lost technicians; there was no longer anyone to repair the muskets, paintings and so on. I'm talking about the field of the arts, but there were other things as well.
The chart on page 2 of the English document shows a disturbing curve regarding the scientific community. Have I correctly interpreted that chart? The second last item is the “scientific and professional (economics, sociology and statistics)” category. Is that disturbing, or do you think the situation will correct itself through planning?