Americans accounted for less than five percent of the global population, but owned nearly half (46 percent) of all civilian guns in the world Share and Comment: FacebookTwitterLinkedInRedditTumblrEmail Home / glossary / Americans accounted for less than five percent of the global population, but owned nearly half (46 percent) of all civilian guns in the worldKarp, Aaron. 2018. “Estimating Global,” p. 4.