And so if they don't have 70, 80 percent  of a grade, they don't stay, which is probably the reason why I haven't been CEO for more than 10 years.
Αν δεν έχουν 70 με 80% της βαθμολογίας,  δεν μένουν και γι' αυτό μάλλον δεν είμαι διευθύνων  σύμβουλος για πάνω από 10 χρόνια.