Where Do America's Foreign Students Come From?

A friend send me an interesting article and chart titled, "Where Do America's Foreign Students Come From?"  As an international counselor in Seoul, South Korea I found this chart astonishing as the majority of foreign students in the US come from Seoul.  I know that their are twenty million people in this city and that I send all of my students to the United States, but I was amazed that Seoul outweighed Beijing.