Each person engaged in conducting a theater, vaudeville or variety show and each person conducting any other exhibition, show, entertainment or performance to which an admission is charged and not in this chapter otherwise licensed shall pay an annual license tax for each place of business as follows: In towns and cities of 3,000 inhabitants or less and in unincorporated places, $5; in cities of more than 3,000 and less than 7,000 inhabitants, $10; in cities of 7,000 and less than 20,000 inhabitants, $20; in cities of 20,000 and less than 30,000 inhabitants, $25; and in cities of 30,000 inhabitants or more, $35.