Interesting that the rate for male students is ~70% of the rate for female students. I wonder if it's always been that high and nobody noticed, whether it's going up, or whether the female rate is going down faster.
What we need to worry about is not trivial harassment, but the serious cases like staff sleeping with their students or continually propositing them with threats or inducements to their careers. Let's get away from a number grab and start focusing on the really bad first [1].
1. My personal experience is the Sciences are the least bad in regard serious harassment with the Arts the worst by a factor of 10x at least.
What is much more of a problem in academia is abuse of power. Academics have huge power and unfortunately far to many abuse this power at the expense of their students and postdocs.