334 students accepted places on the WL (of 1068 offered it) last year and 49 were admitted. The # above in #3 may have been from an older report. (Perhaps the year before, which I recall was very low.)
Don’t forget too that some students will be offered a place from the WL but will not accept it at that time, so more than 49 students on the WL were offered spots. It varies from year to year, so it’s really hard to know what to expect.