No I am afraid I dont have any numbers for my point is that in the last ten years or so the type of people doing their ppl has changed from guys and girls looking for a new career to middle aged peeps looking for something new to do.
I am not knocking these people some of them are very good pilots but the attitude has changed away from the profesional toward the recreational and I think that the rules may need to be changed in order to keep these people safe.
I think a lot of it would be solved by more supervision in their first few years of flying, and a lot of these guys do use safety pilots which is great but if the CAA were to change the rules on leasing and these guys no longer take safety pilots I think without better supervision we will get more accidents.