I wonder if any woman likes anal, perhaps 4-5% only.
A study done by OMGyes states that 44% of the participating women reacted positively to anal stimulation (not just penetration by a penis). While 67% of them at first thought they wouldn't like it. Even 38% have positive reactions by stimulation of the outer regions of the sphincter only. (peer-reviewed via Kinsey-Institute and
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A different study published by the US science magazine PLOS has shown that 37% of the participating females are having anal sex on a regular, consensual basis (It doesn't say so if they are enjoying it, studies of this size are more about a general overview) (public peer review)
So I would say, your numbers are approximations based on personal knowledge.