Those ridership figures are over ten years old. Ridership has gone up systemwide since then, and there is no reason to believe that Queens Boulevard and Astoria have been excluded from this growth. Service has increased in the intervening years, but it is unknown based on the information presented thus far what the current loading factors are.
By the way, 17 E trains plus 17 F trains equals 34 trains, which indeed was scheduled at one time in the system's history, but I have yet to see any document that proves it was ever actually achieved with any degree of regularity or reliability.
David