It's clear that many Avengers are NOT mutants (a good starting list was in this question), but some/many are (Namor, Quicksilver, Scarlet Witch, Squirrel Girl).
Is there a good estimate of how many Avengers were mutants (natural born ones, not mutated normal humans like Hulk) compare to the total membership? I'm not looking for exact count, just a reasonably accurate estimate.
You can use any reasonable definition of "Avengers" you wish as long as you clarify who you include in "All Avengers".