In this context

Hi~ In the following sentences, what could the phrase "the foreign born in 2009" refer to?

23% of U.S. students ? OR 5% who were foreign born themselves ?

Thanks~

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In 2009, 23% of U.S. students had at least one foreign-born parent; this includes the 5% who were foreign born themselves and the 18% who were born here with at least one foreign-born parent.

• Among the foreign born in 2009, 53% were born in Latin America, 27% in Asia, 13% in Europe, and 7% in other regions of the world.