Art and high-profit commerce have been partners in the recording industry since the early days of the Edison devices. The industry has enjoyed two principal "golden" eras: from 1901 to c. 1930, and from 1950 through today. The Great Depression of the 1930s, coupled with the introduction of radio on a nationwide scale, reduced record sales by more than 90 percent. The repeal of Prohibition and the need to restock juke boxes in reopened taverns were major pluses. Coin-operated juke boxes spread rapidly, each with its own record selection.