The U.S. has about 4% of the world's population. Roughly what share of the world's prisoners?

The answer

The U.S. holds about 1.8 million of the world's 11.5 million prisoners, roughly 16%, with only about 4% of the world's people. Smaller countries edge it on incarceration rate, but no large nation comes close on raw numbers.

Correct answer: About 16%