We non-motorists also don't carry guns around, for the most part.
Since some very populous states, including #1 California and #4 New York are mostly no issue, the percentages are even greater in the 43 Shall Issue or better states, a number are getting up to 10%. The percentages are even greater when you adjust to the age eligible population.
So quite a bit higher than "no one", although of course having a licence does not equal routinely or always carrying.