Your chart is from an anti-gun propaganda org website.
They claim only 20% of the population own guns. Even liberals would cringe at BS numbers like that.
Your reading comprehension is limited, huh?
Read the above-post:
“Very possibly true [that the chart is B.S.]. I certainly never admit to firearm ownership outside of this (presumably) anon forum.
But the point stands that “firearms per capita” does not equate to “percentage of households with firearms.””