Despite its monolingual self-image, Japan is multilingual and growing more so due to indigenous minority language revitalization and as an effect of migration. Besides Japan's autochthonous languages such as the Ainu and Ryukyuan languages, there are more than 75,000 immigrant children in the Japanese public education system alone who came to Japan in the 1980s and who speak more than a hundred different languages. Added to this growing linguistic diversity, the importance of English as the language of international communication in business and science especially is hotly debated.