美國白人比例從1980年的80%下降到2012年的63%。

Non-Hispanic whites, the nation’s predominant racial group, added 0.09 percent last year to increase their total to 197.7 million, about 63 percent of the total population. Even with the increase, the largest since 2008, the total number of white deaths exceeded white births by 12,419. In 2000, whites were 69 percent of the population, and 80 percent in 1980.

http://www.bloomberg.com/news/2013-06-13/white-share-of-u-s-population-drops-to-historic-low.html

再有30年，美國白人比例會低於50%。