 The indigenous language with the greatest number of speakers is Nahuatl (1,586,884 speakers in 2010 or 1.5% of the nation's population), followed by Yucatec Maya (796,405 speakers in 2010 0.8%) spoken Yucatán Peninsula, Mixtecas languages (494,454), Tzeltal (474,298), Zapotecas languages (460,683), Tzotzil (429,168), Otomí (288,052), Totonaca (250,252) Mazateco (230,124), Chol (222,051) and 1,462,857 speakers of other languages.After half a century of rural-to-urban migration, in Mexico City and other major cities large districts and sections use both written and spoken Amerindian languages.During the first half of the 20th century the government promoted a policy of "castellanización", that is, promoting the use of Spanish as a way to integrate indigenous peoples into Mexican society.