That’s showbiz? 2012 was the best year in Broadway history, with record numbers of attendance and grosses, the Broadway League announced on Monday. The Broadway box office came in at just under $1.14 billion for the year, the strongest 52-week season in history, according to Charlotte St. Martin, the League’s executive director. Tourists accounted for 63.4 percent of all ticket sales, with international tourists accounting for 18.4 percent of all admission to Broadway shows. Playgoers tended to be more frequent theatergoers than those who attended musicals, and 67 percent of all attendees were female.