Broadway set an attendance record during the week of April 17-23, when some 308,000 people saw the 36 plays and musicals currently playing Broadway houses. The League of American Theaters and Producers says the number “challenges both Shea and Yankee stadiums’ weekly in-season draws.” Gross receipts for the week were reported at $17 million, an increase of more than 25 percent over last year’s figure of $13.4 million. – Backstage