A report by demographer William Frey of the Brookings Institution stated that in the United States, the Millennials are a bridge between the largely Caucasian pre-Millennials (Generation X and their predecessors) and the more diverse post-Millennials (Generation Z and their successors). Frey's analysis of U.S. Census data suggests that as of 2019, 50.9% of Generation Z is white, 13.8% is black, 25.0% Hispanic, and 5.3% Asian. (See figure below.) 29% of Generation Z are children of immigrants or immigrants themselves, compared to 23% of Millennials when they were at the same age. As of 2019, 13.7% of the U.S. population is foreign-born, compared to 9.7% in 1997, when the first members of Generation Z had their birth cries.