Approximately 350 million people speak English as their first language. About the same number use it as a second language. It is the language of aviation, international sport and pop music. 75% of the world's mail is in English, 60% of the world's radio stations broadcast in English and more than half of the world's periodicals are printed in English. It is an official language in 44 countries. In many others it is the language of business, commerce and technology. There are many varieties of English, but Scottish, Texan, Australian, Indian and Jamaican speakers of English, -in spite of the differences in pronunciation, structure and vocabulary, would recognize that they are all speaking the same basic language.