NEW YORK — Buoyed by the holidays, Broadway grosses skyrocketed 15.7% to $17,577,334 during Week 46 (April 5-11), as attendance rose 15.2% to 268,213.The first week of daylight savings time typically sees Broadway biz decline, as would-be attendees choose to savor the extra hour of sun. But this year that week coincided with the typically boffo Easter weekend. “Fiddler on the Roof” saw the biggest gain, leaping $228,224 to $891,509, while the always volatile “42nd Street” jumped $211,810 to $781,194. “I Am My Own Wife” rose $48,660 to $170,336 the week after it won the Pulitzer Prize. The revival of Tom Stoppard’s “Jumpers” earned $269,048 in its first week of previews at the Brooks Atkinson. “The Producers” dropped $366,652 to a still-stellar $1,045,518 as Nathan Lane and Matthew Broderick turned their roles over to respective replacements Brad Oscar and Roger Bart. The 21 musicals grossed $15,294,683 for 87.0% of the Broadway total, with attendance of 226,109 at 92.8% of capacity. The nine plays grossed $2,282,651 for 13.0% of the Broadway total, with attendance of 42,104 at 67.2% of capacity. Average ticket prices were $67.64 for musicals, $54.21 for plays and $65.53 for all shows.