Well, there's various differents statistics about frequency of each type among the population. According to some stats, xSTPs are the rarest sensors, ISTPs representing 5,4% of american peoples and ESTPs 4,3%. There's dramatics differences between males and females ISTPs. With 8,5% of the men, ISTP would be the third most frequent type among americans male population, females ISTPs at the contrary, would be very rares, just 2,4% of american women. Males ESTPs would'nt be rares, but not especially currents though, 5,6% of the male american population, not more, females ESTPs her, would be quite rares representing just 3% of americans females.
There's also Keirsey's statistics telling ISTPs represents 10% of the population and ESTPs 13%, and so, 1/4 american would be xSTPs... What can I say? I'm very doubtful about this! I can't believe xSTPs are so currents, the hypothesis that they would be quite rares is largely more credible. What do you think about?