Our Florida CCW is sought-after by many nonresidents as it has wide reciprocity - in fact, when I used to live in NY, the local gun store had Florida + Utah CCW classes to obtain licensure recognized in most other states.
So as it looks like this list isn’t 1 million resident permits, but just 1 million permits, the per 100,000 may be closer to Colorado’s.
Do you have stats on the number of non-resident permits issued?
Florida has a large non-resident population who would not appear on our census figures either, so the two numbers might cancel each other out.