sports leagues and nationality

How have the national origins of athletes in professional sports leagues diversified over time?

This page has visualizations that seek to answer this question. I hope to build this out in the coming months. Charts start in 1992 and I explain why here.

NBA

More and more athletes who play in the National Basketball Association come from countries outside of the United States, where the league is headquartered.

NBA Charts

All statistics from Basketball-Reference.