<p>Why is it hard? Individual departments don’t take the surveys themselves. Data is isolated. Depending on the survey system, it may be hard for them to extract out major data if it’s a written field as opposed to a selectable field. In any case, the data will show selection bias wherever you go. (people who aren’t getting jobs/going somewhere aren’t going to respond)</p>
<p>I wouldn’t want to give you a ballpark # just in case I was wrong, and therefore misleading you.</p>