Very anecdotally, but just from looking around and the people I know, it would look like a bell curve with the peak in the mid 20s (say 25) and a pretty good percentage of them being around eight years either side, and a tiny few further out in both directions.
Very anecdotally, but just from looking around and the people I know, it would look like a bell curve with the peak in the mid 20s (say 25) and a pretty good percentage of them being around eight years either side, and a tiny few further out in both directions.