Well, I did a quick calculation based on the forum numbers, which is clearly flawed because not every member of the forum owns all the puzzles, but nevertheless here goes...
Isis 5% - 26%; 1% - 0.06%
Ramisis 5% - 3.8%; 1% - 1.8%
Copernisis 5% - 2.4%; 1% - 0.5%
Tessarisis 5% - 0.9%; 1% - 0.3%
Sentinel/NK 5% - 1.4%
Kuku 5% - 1.9%
So I think if it were based on numbers owning the puzzles, it would be more than the 5% and 1%.