Incidence of straight top bands

Is anyone aware, presumably anecdotally, or has had some magic educated guess at the percentage of candidates that score straight top bands (i.e. for all topic areas) on a CFA exam?

1.2196%.

That’s my (very important) opinion.

As a percentage of all test takers, or just those who pass? Each level, or all three?

Although I usually only accept answers with more than 5 decimals in precision, because your opinion is (very important) I am happy to shave one off in this instance. That is my (very important) benevolent decision of the day.

As a percentage of those who pass. We can backsolve for the percentage of the total population.

I suppose each level individually, given that I am personally happy to conclude that the incidence of straight bands across all three exams (by the same candidate) is less than around 1% of all charterholders (purely anecdotally and somewhat divinely).

Whew!