"The number of Americans speaking a language other than English at home has more than doubled since 1979. While there was no detectable change in the proportion of language minorities among those of traditional postsecondary school age (18- to 24-year-olds) between 1989 and 1992, the proportion began to increase after 1992. The percentage of these young adults speaking languages other than English increased from 15 percent in 1992 to 19 percent in 1999." (Quoted from site)